sone to decibel calculatorsone to decibel calculator

9-10 Sones is the loudness of a busy traffic street. NOTE: Decibel = A measure of loudness, or more specifically pressure. But sones is used quite commonly for household items like bathroom ventilation fans, aka bathroom fans and bathroom exhaust fans. June 17, 2022 . Why the change at 40 phon? But have you given any thought to the noise level of your new appliance? This instrument is usually used to measure noise and serves as a level meter. The decibel meter uses the sensitivity of the microphone and converts the electrical signal accurately to sound pressure, and shows the resulting level of sound pressure (decibels dB). Hauslane UC-PS18 and WM-590 Win the 2022 GOOD DESIGN Award! Why do you want a quiet bathroom exhaust fan? In some ways sone noise levels are easier to understand then decibel levels. Along with applicable graphs, charts, and examples. 7 Sones is a sound we hear on a quiet traffic street. Sone to Decibel Calculator Sone to Decibel Calculator Easily convert Sones to Decibels using this calculator. You must first antilog each number, add or subtract and then log them again in the following way: For example, adding three levels 94.0 + 96.0 + 98.0: Or use the . This correlation between sound pressures and sound pressure levels are calculated by Equation 1: L - Sound Pressure Level, dB. Purchasing quiet range hoods and bathroom fans is way easier if you know how much noise each unit makes. If you prefer to have a quiet bathroom fan, but yours is louder than you want, here are steps you can take to make a bathroom fan quieter. Things change for very soft sounds for reasons explained below.). AddThis use cookies for handling links to social media. The sound power in decibel from a source with the highest possible to hear sound power can be calculated as L = 10 log ((100 W) / (10-12 W)) = 140 dB Example - Sound Power from a Fan A fan creates 1 W of sound power. You can also change the position of your blower to enjoy a comfortably quiet kitchen. sale of united methodist church property. Factors and their levels in decibels (dB) If human beings are exposed to loud noises for a brief period, it doesn't cause . For best results, have the appliance professionally installed to ensure proper venting. Sones are a linear measurement, like inches. 1 B = 10 dB. 0000000980 00000 n Installing a range hood improperly can affect its performance and noise level. Loudness in phon, LN Loudness in sone, N Loudness Loudness is the perceived intensity of sound. They will turn off the appliance after a set amount of time. What is a sone and how does it apply to vent hoods? We have 3 children and 4 granddaughters. Range hoods with a delay shut-off feature can also help. The following formula is used to calculate the total number of decibels from the sound intensity level. Sound pressure level is the physical intensity of a sound. Older fans, or fans that are installed improperly will be noisier. The sound intensity level in dB is determined . Flexible ducts allow for a quieter operation. Most sound levels for equipment such as lawn mowers or compressors are given in decibels. You can check the specific models with lowest sones here. All rights reserved. Perceived volume or loudness of sound, is a complex phenomenon, not . We may or may not be compensated for purchased you make as a result of our recommendation. To summarize this decibels chart, one sone is 28 dB and eight sones are about 57 dB. From sound pressures, we can arrive to a sound pressure level which is measured in decibel, dB. Keep in mind that your hood wont be on max speed all the time; typically, it will only run on max speed when you have a lot of smoke which needs to be cleared out of the room fast. As you can see, most new range hoods and bath fans are fairly quiet. Decibels are used more often giving you a feel for how loud something is. The loudness of complex sounds, i.e. Consequently, the sone scale of loudness is based on data obtained from subjects who were asked to judge the loudness of pure tones and noise. Here is the Concise Oxford Dictionary definition. Eight sones are equivalent to a normal conversation or background noise. For a pure tone at 1 kHz, loudness in phon equals sound pressure level in decibels (dB). If these tips for how to make a bathroom fan quieter dont work, then replacing the bathroom fan might be your only option. Sones are not decibels or volume, but rather how sound is sensed. How many decibels is 1 Sone? This can be seen through the formula above that converts W/m^2 into decibels. 101-125 dB: 110 decibels and above is the level where other sounds can not truly be heard. Average 1-6 Person Home kWh Usage, Gas Vs Electric Water Heater Monthly Cost Comparison (State-By-State), Water Heating Costs For 1,2,3,4,5,6 Family Homes (State-By-State Analysis), Electric Water Heating Cost, kWh Usage Per Month (State-By-State RECS Analysis), What Is W2 Wire On Thermostat? Put down a large bath mat. Straighten it and tighten it, if possible. These applications will - due to browser restrictions - send data between your browser and our server. The larger the bathroom, the higher the CFM rating you will need. Sones are 0.3 to 1.0. What Does a Bathroom Exhaust Fan Do and Do You Need One? What Size Heat Pump Do I Need? How to use for Sound calculator Input 1/1 octave band frequency data in Decibel unit (Not A-weighting). Heat Pump Size Calculator, 8 Best Bathroom Exhaust Fans With Light (For Any Bathroom), 5 Quietest Bathroom Fans In 2023 (Below 0.9 Sones; Whisper Quiet), BTU/h To Horsepower Calculator + BTU/h To HP Chart (To 72,000 BTU/h), Horsepower To BTU/Min: Convert HP To BTU Per Minute (Calc + Chart), HP To BTU/hr: Horsepower To BTU For A/C (Calculator + Chart). This will stop noisy vibrations too. 0000001133 00000 n The fan size is calculated in cubic feet per minute (CFM). Passing diesel truck. a sone is just a measurement of loudness at a specific frequency. What is a Decibel? Apply thin foam to the bottom of the cover where it contacts the ceiling. Then, buy a hood based on that measurement. We have prepared a Sones to dB calculator to help you out. The decibel ( dB) is a logarithmic unit used to measure sound level. Our team at Hauslane is ready to help. Decibel (Loudness) Comparison Chart Here are some interesting numbers, collected from a variety of sources, that help one to understand the volume levels of various sources and how they can affect our hearing. So going from 1Hz to 2Hz is an octave and going from 1000Hz to 2000Hz is also an octave The loudness of a sound depends not only on the dB level but also on the frequency of the sound Establishing Quiet Zones: The final rule also provides an opportunity for localities nationwide to mitigate the effects of train As a linear measurement, doubling the sone level is equivalent to doubling the loudness; quadrupling the sone value quadruples the loudness, etc. Copyright 2021 hauslane. Decibels to watts, volts, hertz, pascal conversion calculator Convert dB, dBm, dBW, dBV, dBmV, dBV, dBu, dBA, dBHz, dBSPL, dBA to watts, volts, ampers, hertz, sound pressure. No. Please read AddThis Privacy for more information. When you buy through links on our site, we may earn a commission. Loud noise above 120 dB can immediately damage your hearing. When range hood shopping, don't just consider the sone level. With things like bathroom exhaust fans, for example, they have a standardized measurement process (with the same distance between the fan and noise measurement device). From the dB conversion chart above, 65 dB is about 13 sones, while most vent hoods are between 6 to 8 sones. One decibel (0.1 bel) equals 10 times the common logarithm of the power ratio. Inicio; Nota Biografica; Obra; Blogs. The decibel scale and the intensity values it is based on is an objective measure of a sound. Use fabric hangings or sound-deadening panels on the wall or the back of the door. A lot of these tips for making a bathroom fan quieter start with removing the cover. 5 Sones is basically a louder conversation. The human test subjects used to develop the sones rating system were asked to describe how loud a sound felt. If you select a range hood with a large motor and multi-speed setting, you can strike the right balance. For every 3 decibel increase or decrease, you are adding or dropping 50% of the sound pressure levels your ears are exposed to. Loudness is the perceived intensity of sound. Step 3: Calibrate the headphones by changing the . Yet sometimes, louder vent hoods are necessary because you need more power to vent cooking exhaust out of your kitchen. 0000002567 00000 n The threshold of human hearing, also called the auditory threshold, is widely accepted to be 0 dB. But lets be honest many homeowners want their fan to be a little louder to drown out bathroom noises, right? Click the Convert button, and the missing value will be filled in. facetime call on chromebook; Formulas: L = 10 log norn = 10(L/10) HKo8>JfpHzhEEn$},PPVD.M<02ieq=-`R ~G2g7_3}0cn^&ywb _M{fm,L_lB"K Zf/A8|n&eN|Ff2]Os?RZY. [a aki+zF{n^Z9ZKliZ+Y:@TG8zG[F!GN`sf4QZ~r:pVq^*Q&&%fg%SI 8YxvS;Ez)7gQj+'9Q8e Reference: Psychoacoustics: Facts and Models by Hugo Fastl and Eberhard Zwicker. If your home is small and/or there is a bathroom close to the kitchen or living areas, a fan that runs at 2.5 sones or higher might be preferred. 0000001521 00000 n Shopping for a new range hood? Phon: a unit of the perceived loudness of sounds. The larger the motor of your range hood, the more sound it is likely to produce. Save my name, email, and website in this browser for the next time I comment. Note: The chart includes a link to Sound Loudness Design Equations if you are interested. Calculator Academy - All Rights Reserved 2023. In addition to hearing sensitivity varying with frequency, in complex sounds some sound components partially mask other components. If theres a reducer on the fan, remove the reducer, and install the properly sized larger duct. But the calculator will give a very accurate comparison between Sones and Decibels. In terms of power it's ten times the power. Each soundwave, depending on its intensity, changes the atmospheric pressure of the surrounding area. We don't collect information from our users. 1 Sone is equal to 28 dB. The perceived loudness of sounds is decided by panels of people with normal hearing. They are linear in that 1 sone is twice as loud as .5 sones. Bathroom fans range from 0.3 to 4.0 sones. air), Sensible Heat (BTU/hr) = 1.1 x CFM x t (std. One that is more powerful than necessary will make more noise too. For example, the Broan-NuTone F403004 produces around 1.5 sones. Copyright 2014-2023, PICKHVAC All Rights Reserved. Large bathrooms Over 80 square feet: 100 CFM to 150 CFM fans are recommended. We would like to answer how many dB is 1.5 Sones. I will start with the quietest bathroom fan on the market today. This app uses your smartphone's microphone to detect sound and display it in decibels as well as display the last 30 seconds of data on an easy-to-read graph. This will reduce whooshing or hissing noises. Loudness is a subjectivecharacteristicof a sound (as opposed to the sound-pressure level indecibels, which is objective and directly measurable). I have been married to the same wife for 46 years. A formula with a cautious try to convert sones to decibels: dBA = 33.22 log (sones) + 28 with a possible accuracy of 2 dBA or sones = 10^ [ (dBA 28) / 33.22] Weighting filter after DIN EN 61672-1 2003-10 (DIN-IEC 651) - weighted dBA and dBC blue doberman puppies. B level d. BA phon phone volume intensity calculator d. B d. Ba and Sone relate fan theory noise rating sound volume psychoacoustics translate loudness level phon definition loudness in sone ratio how measure sone Conversion valid between 4. Noise bounces around in a bathroom with all hard surfaces. This should give the builder and architect easy targets to hit during construction and finishing. For a 1 kHz tone above 40 dB, perceived loudness doubles every 10 dB. Calculator + Chart (Natural Gas), Average Gas Bill For 1-Bedroom Apartment: State-By-State Cost Analysis, Average Electricity Bill For 4 Person Household (Survey Analysis), How Many kWh Per Day Is Normal? This is a sound we can hear quite easily. If the 1 KHZ frequency is varied, it becomes necessary to re-calibrate the phons and sone numbers. You Are Here: will my player transfer to 2k22 next gen texas roadhouse call ahead seating rules sone to decibel calculator. - free apps for offline use on mobile devices. Quiet bathroom fans make as much noise as normal breathing or whispering from a few feet away. Figure 2 is generated based on these assumptions. Click the Convert button, and the missing value will be filled in. Bosque de Palabras The right range hood noise rating depends on your preferences and cooking style. Convert between sone and phon units of loudness Convert loudness between phon and sone units Fill in one value and leave the other blank. (based on the definition of 1 sone = 1000Hz tone at 40 dB)to relate the sone to decibels. However, if your bathroom is near bedrooms with light sleepers that are easily woken up, then having the quietest bathroom exhaust fan might be preferred. 5). Sones are basically loudness units that express the perceived loudness of sounds; how loud we perceive some noise. Gas Furnace vs Heat Pump Cost Calculator (Running Cost & Savings Comparison), HVAC Repair Costs: Service, Maintenance & Hourly Rates 2023, Types of Furnace: How to Choose Proper Furnace. With a variable speed hood, you can enjoy an even quieter fan, all the way down to 1 sone. Please see Room Loudness Sones Reference Chart at engineersedge.com. B = 10 * log ( I / I0 ) B = 10 log(I /I 0) Where B is the sound intensity decibels I is the sound intensity (W/m^2) I 0 is the reference sound intensity (equal to 10 -12 W/m^2 for ambient noise) The phon scale is logarithmic and less intuitive. Sones follow a linear scale, that is, 10 sones are twice as loud as 5 sones. A quiet fan will have a rating of 6 or 7 sones, which is roughly 65 decibels For power, a reference level of 10-12 watts is used The 5 Best Portable Generators (2022 Review) How to install a bathroom vent fan If you're looking to save some money, the best budget option on our list is the LG LW6017R If you're looking to save some money, the best budget option on our list is the LG LW6017R. Check out the table below which has sones to decibel conversions up to 20 sones. Sone levels are lowest when your hood is set to the lowest speed and get louder incrementally with each speed. What Are Sones? But below 40 dB, perceived loudness drops off more quickly; it takes less than a 10 dB reduction in sound pressure level below 40 dB in order for humans to perceive the loudness as having been cut in half. How To Choose the Right Range Hood for Your Kitchen, How to Install a Ductless Range Hood (Easy DIY Guide! Absorb the sound. Sone values are different then decibel measurements because they take into account the frequency and level dependency of human hearing. Tighten any screws, nuts or bolts you can reach. 7). dBA = 33.2 * LOG10(Sones) + 28 Sones dB Sones dB Sones dB Sones dB Sones dB Sones dB 1.00 28.00 13.00 64.98 25.00 74.41 37.00 80.06 49.00 84.11 61.00 87.27 This keeps the sound produced from your blower at bay. Here is the mathematical formula we use to convert Sones to dB: Sones to dB equation is not the easiest to use. The article also provides more details about sones. Hopefully, this guide gives you the tools to determine the loudness of your range hood. Here are the results, summarized in a chart: Lets solve 3 examples to illustrate how Sone to dB conversion works: Some of the quietest fans run at only 0.3 Sone noise levels. June 30, 2022 . Understanding the Sones noise rating of your range hood can help you find the right model for your cooking needs and comfort level. = 4.5 x CFM x h (std. how often are general elections held in jamaica; allison transmission service intervals; hays county housing authority; golden dipt breading recipe To be honest, I do not think that using a mathematic formula to find the exact number of sonesaccurate to 2 decimal pointswill be the main reason you decide to purchase an item. If the decibel value and reference level are known the absolute signal level can be calculated by transforming (1) to, S = Sref 10(L / 10) (2), S - signal- intensity or power level (signal unit), Sref - reference signal - intensity or power level (signal unit). It's simple and easy to convert sones to dB and vice versa. - the decibel value of a signal increases with 3 dB if the signal is doubled (L = 10 log (2) = 3). The general consensus of safe decibel levels for the human ear is 70 dB or below. To calculate SIL from the sound intensity, use the sound intensity level section: Enter the reference sound intensity value. objectively measured sound pressure (voltage), These Signs Say it's Time to Replace your Range Hood, The Best Kitchen Upgrades for a Home Resale, Top 5 Stainless Steel Cleaners for Range Hoods, How to Select the Quietest Range Hood for your Kitchen. Our Final Thoughts on Sones. They developed the Fletcher Munson curves that have been improved upon, but are still in use today. Levels in decibels (dB) and their different factors, Adding of equal loud non-coherent sound sources. 1 Pa = 1 pascal = 1 N/m 2. The higher the CFM, the more powerful the fan. 0000002176 00000 n Range hoods typically produce between three and seven sones depending on their power, as measured in cubic feet per minute or CFM. The total level in dB is the level of one sound source plus the increase of level in dB. To find how many decibels are in one sone, plug one into the equation: dB = 33.2*log 10 (1) + 28 = 28 dB. Increase duct size. Now, you're basically talking about weaponized audio. 3 Sones is a sound TV makes when set at a comfortable volume. As the sone to decibel calculator shows, 3 sones is 44 decibels. And then you can view the chart to compare your bathroom fans noise level to common activities. The other 2 appliances that may regularly use sones as a sound rating are: The formula for converting sones to decibels is: Examples: 33.2*log10(1 sones) + 28 = 28 decibels, 33.2*log10(3 sones) + 28 = 43.84 decibels. 2 sones are twice as loud as 1 sone and 4 sones are twice as loud as 2 sones. Sones Decibels (dB) 1 Sone: 28.00 dB: 1.5 Sones: 33.85 dB: 2 Sones: 37.99 dB: 2.5 Sones: 41.21 dB: 3 Sones: 43.84 dB: 3.5 Sones: 46.06 dB: 4 Sones: 47.99 dB: 4.5 Sones: 49.69 dB: Sone values are generally preferred to phon values because sones are a linear scale. CFM This is the cubic feet per minute the fan moves through it. 6). Just as an example, one sequence to calibrate both the online sound meter and headphones for hearing testing is as follows (watch video).Step 1: Use an acoustic calibrator and calibrate an iPhone sound meter using the free NIOSH SLM app made by the CDC. Set the quantity type and decibel unit. Copyright 2023 Proline Range Hoods. Decibel (dB) Calculator. Consistent exposure to 85 dB and above may result in hearing damage or hearing loss. 8). You can use this Sones to decibels calculator to convert any number of Sones to dB. The decibel level of a signal can be expressed as, L = 10 log (S / Sref) (1), S = signal - intensity or power level (signal unit), Sref = reference signal - intensity or power level (signal unit). 0000000687 00000 n 0.000000000001 W/m 2. For pure tones at much higher or lower frequency, loudness in phon will be less than sound pressure level in dB because hearing is less sensitive as you move away from the neighborhood of 1 kHz. 8 Sones is a sound we hear on an average loud traffic street. Good luck finding the right vent hood for you! The maximum sound level of your vent hood is not very loud: the sound of traffic noise. Sponsored Links The calculator below can used to calculate the NC - Noise Criterion: Sound Pressure Level (dB) - Octave band mid-frequency (Hz) 63 Hz (upper limit 83 dB) 125 Hz (upper limit 79 dB) 250 Hz (upper limit 75 dB) 500 Hz (upper limit 72 dB) 1000 Hz (upper limit 71 dB) Adding (combining) levels of equal loud sound sources. The decibel is a logarithmic ratio of the sound pressure compared to a reference pressure Area of the Room=10 x 15 x 10 =1500 Cub Answer: Decibels are simply a ratiometric value CFM = (1,000 sq ft * 8 ft * 4) / 60 min = 533 ft3/min = 533 CFM A common rule used by HVAC professionals looking to do a fast calculation Siemens Sound Quality Metrics: Loudness and Sones, Room Loudness Sones Reference Chart at engineersedge.com. Loudness is measured in decibels, right? mike matarazzo last photo. So, if you want a quieter hood and dont cook often, purchase a 600 CFM range hood. Decibel EquationConvert Voltage or Power Gain to Decibels. sones to db conversion calculator grant thornton vision and mission holiday promotions 2021 inverted lapel blazer women's sones to db conversion calculator Home Example: A 90 phon tone is equally as loud as a 1000 Hertz tone at 90 decibels. The ratio may be power, sound pressure, voltage or intensity or several other things. Anything in this degree might provide you with a sound criticism from the neighbors Below figures show how to add the individual level to estimate total noise level sones to db conversion calculator This is a good choice if you're looking for a sound level meter on a budget and just need basic information ProStarSolar > Blog Classic > Uncategorized > db to . Here are the tips and the types of bathroom fan noises they solve. Also in people exposed to loud noise. Decibel levels use a logarithmic scale like the Richter earthquake scale. Do I Have A Heat Pump? Aircraft takeoff, trains, and quite loudly concerts would fall to the 110+ decibel level. The better ones have a noise range between 0.3 and 4.0 sones. First, you can convert your fan's sones rating to decibels. These are not common and they are more expensive than local or remote blowers. Out of all of the range hoods we researched, this range hood is the most affordable. is donald smith still alive; julie grant court tv cheerleader The engineers who designed the table below included fairly wide sone ranges. It can be extrapolated by using measurements in decibels or pascals. They tend to be more powerful and typically emit between 3.0 and 7.0 sones. Keep in mind that the calculation is approximate since there is no exact way to calculate decibels from sones. This indicates how much air the fan can move in one minute. Sone: a unit of subjective loudness, equal to 40 phons. Most of us enjoy some peace and quiet every now and again. This is consistent for the entire frequency range. 2.0 to 3.0 sones provides a fair amount of white noise that makes bathroom use more comfortable for some family and guests. This formula will help you convert sones to decibels: dB = 33.2*log10 (Sones) + 28 To convert one sone to decibels: dB = 33.2*log10 (1) + 28 = 28 dB To convert decibels to sones: Sones = 10 ( (db-28)/33.2) Not in the mood to break out your high school math skills? Sone measurements are a linear table, meaning that a doubling of perceived sound represents a doubling of the sone value. Loudness, or the strength of a sound, is measured in decibels. The quotient i2/i1 is the sound intensity ratio. (std. sone to decibel calculator. (State-By-State Chart), How To Convert Therms To kWh? Increasing loudness by 10 phon increases loudness in sone by a factor of 2. Sone is a more linear scale of perception. The sone scale is linear, so no matter the frequency or level, 2 sones is twice as loud as 1 sone, and 4 sones is twice as loud as 2 sones. The dB is a logarithmic way of describing a ratio. mE$0 S}wjt&Vs, Here are common bathroom fan CFM ratings and the quietest fans in that range. Press the space key then arrow keys to make a selection. Instead, they follow a curve that slowly flattens out. Sones are the industry standard noise measurement for fans. That means for larger values than '1 sone is equal to 4. Decibel is a dimensionless value of relative ratios. Replacement tip: When quiet operation is your primary goal, buy a new bathroom fan that is the right size for your bathroom. Range hoods with larger motors will have stronger suction power and generally produce more noise. Sound Power (dB) = 10 log (sound power [watts]/10-12) Sound Pressure (dB) = 20 log (sound pressure [microbars]/.0002) Sones An alternative loudness descriptiont is sones. Range Hoods, What You Need to Know about CFM and Its Accuracy Before You Buy a Range Hood, Everything You Need to Know About Sones Rating for Range Hoods. 10-12 W is normally the lowest sound power possible to hear and this value is normally used as the reference power in sound power calculations. The relation between the two is complicated. CUSTOM ART FOR CUSTOM NEEDS. If the sone value triples, the perceived loudness triples. Maybe something with acoustics. Which is why you see the sound curves in the chart above. You can also select a range hood with an external motor system. 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You can target the Engineering ToolBox by using AdWords Managed Placements. 44 decibels to 63 decibels. 31.5Hz) is not available. 1 Sone is a sound of an average refrigerator. ), you will be better able to know what the machine will sound like. Typically, sones are measured at maximum hood speed or CFM. W2 Wire Thermostat Wiring (2nd Stage), Thermostat Wire Color Codes For 3-8 Wire Thermostats (Color-By-Color), How Many Therms Of Gas Per Month Is Normal? There are three types of blowers: local, remote, and external. H\Tx3!/lPf! iI6`!d . dB Calculator 0 dB Decibel Addition and Subtraction Sound levels are generally expressed in decibels, which are logarithmic and so cannot be manipulated without being converted back to a linear scale. %eeff%5'*gI{'?-Q(g^9#6,Zh#19[$A9s'*g^Ntq8rPfk3*gjrRh,r u8A9uu(3~(+gQN1.Df)r3}YO z"7ah8!rPQsd4 L = level difference; n = number of equal loud sound sources. P - Sound pressure, Pa. Pref - reference sound pressure, 0.00002 Pa. As an example, the sound pressure from a . The calculator below can used to calculate the NC - Noise Criterion: Sound Pressure Level (dB) - Octave band mid-frequency (Hz). 0000003537 00000 n Make Shortcut to this Calculator on Your Home Screen. Consider whether you are using flexible or rigid ducts. You can also use this calculator to find out the Power Gain and Voltage Gain from the Decibel value. Raise the same 20 decibel whisper to 500 Hertz and it becomes audible. The phon scale sticks to the dB level of a 1 kHz tone, even for sounds quieter than 40 dB. This means that doubling the number of sones doubles the noise level. Keep in mind that all sone values are given with the largest duct available for a given fan. The sone scale attempts to follow human perception for all sound pressure levels so that, for example, doubling the loudness of a sound doubles its value in sone. Use the slider and slide it to 0.5. Thats how you can adequately compare which fans are the quietest. Although decibels are generally used to measure this. Since decibels are a measure of the difference of sound pressures, a reference sound pressure must be given. But which sound quantity produces this effect? A sone rating for sounds may be more useful because humans sense higher and lower sound wave frequencies differently. Level value (Decibel dB Gain) and vice versa.
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