Skip to main content
5 votes
Accepted

How to record wav file in bit depths lower than 8 bit?

Lower bit depths are not easily available simply because they are not looked for commercially, not because of some intrinsic technical difficulty. Audio interfaces or other capturing devices have ...
José David's user avatar
3 votes
Accepted

What is gain when the input is digital and the output is analogue?

0dBFS 1kHz sine defines a peak value. Alignment of audio levels is usually done at an RMS level of -18dBFS or -20dBFS depending on the standard you are applying. The line level alignment level that ...
Mark's user avatar
  • 8,900
3 votes
Accepted

How to interpret this PCM data?

Your data have relation neither to bitrate, nor to frequencies. The name samples[] suggests that they are samples, i.e. amplitude values in particular time points:                   These time points ...
MarianD's user avatar
  • 447
2 votes

How to generate 8 bit unsigned PCM code comma separated

ffmpeg -i original-file.wav -f u8 -acodec pcm_u8 8bit-file.pcm See also here. It's not comma-separated but binary, but that's definitely the more sensible choice – especially for a board with very ...
leftaroundabout's user avatar
1 vote

What causes the spike in PCM signal?

These spikes are high frequency components contained in the resulting signal decode. There are two possible reasons for this. Method one uses a low pass filter which removes these components. Method ...
Mark's user avatar
  • 8,900
1 vote
Accepted

What would cause a recording to have a completely symmetric frequency plot?

According to this spectral output you are not dealing with 48kHz sampled audio. For some reason the audio has been decimated and the actual sampling rate is 24kHz. Consequently the 'nyquist' frequency ...
Mark's user avatar
  • 8,900
1 vote

How to generate 8 bit unsigned PCM code comma separated

Do this in two steps. First generate the RAW file (in audacity, there is an option to export to headerless RAW audio file under Export -> Export Audio). Make sure you export to 8-bit signed or ...
Nirav's user avatar
  • 145
1 vote

Direct Stream Digital (DSD) editing software, no PCM

Nowadays it can be edited with programs like Tascam Hi-Res Editor: http://tascam.com/product/hi-res_editor/ From their site: TASCAM Hi-Res Editor is a new, free application that plays and edits ...
James Bond's user avatar
1 vote

Direct Stream Digital (DSD) editing software, no PCM

This is a complex question =-) there's only one software that allows for true DSD editing, Sonoma Systems. This software however relies on sound card dependencies. DSD cannot be edited because there'...
Anon Ymous's user avatar

Only top scored, non community-wiki answers of a minimum length are eligible