Questions tagged [loudness]

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Can the ffmpeg `loudnorm` extension be used to guarantee a maximum volume in an audio file?

I'm looking at a way to ensure an audio file doesn't ever get too loud, but I do not want to change the samples if it is under a given threshold. For example, I would like the file to have a maximum ...
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40 views

In Adobe Audition, I saved/exported a 3h mix at +3dB. Have I lost tons of transients and dynamics?

Is there any way to get it to sound just as loud on SoundCloud without losing quality? The clipping is there, I believe but it’s not very audible but becomes significant upon closer listening. I have ...
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1 answer
96 views

What defines loudness of mp3 in a file?

Still trying to understand why loudness data is so difficult to find... Say there are mp3 files and a smartphone. Smartphone has amplification buttons, but at same level different files` sound is much ...
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1 vote
2 answers
66 views

How loud must a speaker be for the sounds from it to be audible when the ambient noise is 80 dB, i.e. a speaker beside a highway

I am considering the miniature speakers of CUI Devices for a project. The ambient noise may be as loud as 60 dB to 80 dB (the speaker could for isntance be placed close to a highway), but could just ...
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0 votes
1 answer
211 views

How do I adjust recorded audio so that the quiet parts become louder and the loud parts become quieter?

I'm currently using Audacity. I also have no understanding of audio design so if you could explain things in simple terms it would be greatly appreciated. So my buddy and I recorded a podcast, but his ...
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4 votes
1 answer
50 views

One clip becomes louder when merging clips in Adobe Audition

I have a sound recording of a Zoom meeting that I am using for a podcast. I have separate tracks for the hosts, but for this person I sadly only have the Zoom recording, which is doable but isn't ...
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2 votes
1 answer
220 views

How to convert between LUFS and LU (EBU mode)

I want to use the Digicheck EBU R 128 meter to check that my material is -14 LUFS integrated (according to Spotify and Youtube specs). Thing is the target level of the Digicheck's meter is locked at -...
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-1 votes
1 answer
30 views

Whether the audio file safe for my speaker? How can I know?

If I amplify some audio file (maybe because it's unhearable before) using some amplifying tool, how can I know that playing the new (output) audio file won't damage my speakers?
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2 votes
1 answer
1k views

Linear loudness normalization in FFMPEG is in fact dynamic

I followed this post to normalize the loudness of a clip. I first measure the loudness: $ ffmpeg -i "Take109 000-012.wav" -filter:a loudnorm=I=-24:TP=-9:LRA=5:print_format=summary -f null - ... [...
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2 votes
1 answer
375 views

Normalization - peak amplitude level vs actual loudness level

I'm producing an animation and I came to a frustrating dilemma with the sound normalization. The recommended normalization for dialogue, on YouTube, is apparently between -6 db and -15 db. Due to many ...
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0 votes
1 answer
650 views

Make quiet quieter and loud louder using vst or equalizer apo

Excuse me for my English and my repeats in advance. So i need to do the exact opposite of what normalizers do. My mic has extreme spatial sensitivity(condenser mic without 48v) and it catches even a ...
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0 votes
1 answer
83 views

Loudness normalization makes file four times larger

I have several WAV files that I pass through FFMPEG's loudness normalization: ffmpeg -i input.wav -filter:a loudnorm=I=-24:TP=-9:LRA=7 output.wav The output files are on average four times larger (4....
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1 vote
0 answers
152 views

Decompressing a track during mastering?

I was watching the video for Skrillex's Mumbai Power where he famously shows Izotope's Insight reading -3.7 LUFS for a short portion of the track before the second drop: ...
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2 votes
1 answer
44 views

What are up-to-date practises for music mixing for a consistent loudness across different delivery platforms?

Loudness management has been a feature of film/tv for a few years now, but streaming platforms are now influencing mixing and mastering practise in the context of loudness normalisation. What are ...
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3 votes
1 answer
61 views

What are the current techniques for measuring programme loudness?

What are the current best practises for measuring programme loudness?
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  • 8,454
1 vote
2 answers
1k views

How to destroy audio (blown-out clipping effect)

I'm looking for ways to destroy audio without making it sound robotic. Here is an example video for what I am looking for: I can use any tools or plugins: Adobe ...
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0 votes
1 answer
257 views

What is the difference between Audacity's dB and MP3Gain's dB?

I've read that Audacity can also do MP3Gain's job to normalize multiple tracks, but while in MP3Gain the target volume is something like 89.0 dB or 95.0 dB in Audacity the maximum is 0 and it goes ...
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1 answer
90 views

Shockwaves: loudness or speed?

I got into figuring out decibels, and loudness measurements, and found the number 194dB as the boundary at which a sound starts distoring itself, namely creating vacuums which supposedly turn into ...
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2 votes
1 answer
45 views

How do I comply with the CALM act in the US with loudness levels?

I'm a bit new to this, and I started working at a small TV station recently. I've read a little bit but I'm still confused. Does the CALM act passed in 2010 apply to commercials I make? How do I ...
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1 vote
2 answers
3k views

How do I eliminate (or reduce) the dynamic range?

I have these podcasts, which I listen to while going to sleep. Unfortunately the volume sometimes suddenly goes up (e.g. when the guy talking wants to emphasize something). I would like the volume to ...
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1 vote
1 answer
69 views

Improving digitalized tape recordings - more than what I've done

Context: I have a huge amount of audio files (tape recordings that were digitalized into mp3) that I've been asked to clean up for someone. It's only voice (conferences). Why: I guess it would be a ...
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1 vote
0 answers
83 views

Loud audio recording microphone

I'm trying to record really loud audio - a jet engine, actually. I'm limited to recording in a 20'x 20' cinder block test room. We have cameras in the room, some that record audio, but the audio is ...
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0 votes
1 answer
325 views

Intensity, amplitude, frequency, and perceived loudness

If we were to measure loudness solely as a property of amplitude, then high frequency sounds, which contain high energy, would have the same value as low frequency sounds, which contain low energy. On ...
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0 votes
1 answer
61 views

Fixing loudness on large MP3 comedy gig recordings

tl;dr: How can I manipulate an existing MP3 recording have a consistent volume level? Details: I have a few 60-90 minute long MP3s that I would like to listen to through my headphones but the audio ...
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  • 103
0 votes
1 answer
152 views

Dialnorm in a stereo mix?

Can Dialnorm metadata be present in a stereo mix? I have a stereo mix film that when processed through OP59 loudness algorithms somehow produces a ramp in overall levels during voice only scenes with ...
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1 vote
5 answers
9k views

Why isn't the classical guitar part of an orchestra?

At least why not in modern orchestras? There is an argument that says it is too quiet so the rest of the orchestra will down out the guitar. However, that is true if we are talking about adding one ...
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1 vote
1 answer
47 views

How to even speach loudness?

I am working with a recording (some speach) where it has parts with different loudness (amplitude) so I would like to make all those parts evenly loud. Actualy, I would like to make every word spoken ...
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3 votes
3 answers
255 views

Pitch to Loudness relation

I have subtle education on music/sound design so excuse my ignorance if any. I am producing a score via programming ( actually Java and minim ) where I use Oscillators to produce sound. I noticed ...
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2 votes
1 answer
2k views

Relationship between amplitude and loudness (again)?

I feel that this type of question has probably been asked a zillion times before, but after reading the basics of audio and sound there is still something basic that I'm unsure of... Consider a pure ...
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2 votes
1 answer
1k views

how come some mp3's are louder then 0db?

i noted that a lot of times when i run a mastered track through a vst plugin (with the plugin set not to do anything, for example a flat equalizer in ozone), the meter inside the plugin will go above ...
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2 votes
2 answers
986 views

Why do we need power amplifier with hundred watts of power?

For normal home audio systems, the speakers usually have sensitivities around 85~90 dB. So according to the sound pressure chart, it's pretty loud already at 1 Watt of power. Then why do audio ...
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4 votes
4 answers
43k views

Is bass boost harmful?

I recently bought a Sony headphone which has "bass boost", and I really love it. I love it so much that I increased the bass (low frequencies) on every device I use it on, with like 7db and decreased ...
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3 votes
3 answers
2k views

Doing a TV show, they have audio standards - mix strategy?

I've been editing a six-episode, 53-minute-per episode TV series to run on the community access cable channel. Their standards given to me: -18dB average, no peaks over -15 or valleys under -25. I'...
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0 votes
4 answers
647 views

Increasing loudness of sound effect

I'm using background music and sound effects in my android-game. The Problem is that these sound effects differ in their loudness very much. And some of them are much to quiet. Unfortunately, the ...
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1 vote
4 answers
290 views

Reference movies for mastering

What reference movie do you have for mastering? I'm more concerned with dynamic range and loudness. Which movies have the best of both worlds? I think the last Superman movie was too loud, I didn't ...
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1 vote
3 answers
2k views

EBU R 128 change Short Term LUFS with stable Integrated LUFS

Hopefully there are some people that know the EBU R128 loudness measurement. (Germany) I have a TV advertisement, that sounds exactly the way I want. It consist a Backing track, one FX and a Claim ...
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2 votes
4 answers
641 views

Understanding Loudness & Broadcast Standards

This is going to be pretty broad cause this stuff just confuses me so I wondering, if you guy's could give me some resources to check out so I can understand them a little better. I don't even know ...
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5 votes
1 answer
1k views

how can I make sounds of different frequencies appear subjectively equally loud?

I'm making an experiment where I play pure tones of three different frequencies (220 Hz, 440 Hz, 880 Hz) at 75 dB SPL. I've noticed that they don't sound equally loud, and I would like them to. I ...
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5 votes
4 answers
3k views

How do you record loud sounds?

Yesterday I had the good fortune to do some car drop recordings. Needless to say it was loud and great fun ;) There was 4 other recordists there and during the after session beers we were discussing ...
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1 vote
3 answers
199 views

The power of many drums

I recently saw a performance of 10 drummers playing in unison. It has a certain power to it. It's loud of course. Although they played together quite well, obviously the attacks don't line up ...
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5 votes
4 answers
11k views

Explain the Fletcher-Munson Curve To An Idiot

I just know that it's has something to do with the loudness levels being equal across the frequency spectrum, care to explain it further?
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2 votes
6 answers
620 views

loudness metering

Been asked at work to mix to a loudness reading aswell/rather than ppm. I think the UK are switching over to this it seems. Have any of you used these before? which do you recommend? is ...
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3 votes
11 answers
387 views

An esthetic for evoking a loud(er) sound

Let me try explain the sound, it's sounds to me like distortion and/or saturation. I have noticed this esthetic developing, it's come up in a few movies lately. I just watched Rise of the Planet of ...
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13 votes
11 answers
73k views

How loud is 0dB, and what is a good dB to mix to?

In Shaun's recent post about the sound design challenge, he mentioned that there was a request for a loudness-limit (-10dB peak, I believe), and I realized that I was most likely the reason for it, if ...
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  • 4,085
6 votes
4 answers
628 views

SPL Meter Question

I was looking at a few different SPL meters, as I need to buy one, and I noticed that every one of them measured from 31.5hz to 8khz. Why? Why not 20 - 20? I'm guessing it has to do with the equal ...
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  • 7,608
3 votes
8 answers
3k views

Recording extremely loud sound sources

During the next month in Valencia (Spain) is taking place a fest in which the main act everyday is a massive burst of firecrackers in the main city square. This event called "Mascletá" is widely ...
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