26
votes
Accepted
Does the .wav file created from a .mp3 file have better quality than the .mp3 file itself?
A WAV file has the potential to hold "more" or "better" data than an mp3. WAVs employ no compression, no loss; they are as close to an exact replica as it is possible to get.
An mp3 employs lossy ...
- 8,141
8
votes
Does the .wav file created from a .mp3 file have better quality than the .mp3 file itself?
No. When you convert a file from .mp3 to .wav, no new information is added: there is no way to regenerate the information that was lost when you created the mp3. All the extra data in the .wav file is ...
- 1,568
6
votes
Accepted
Are compressed audio files converted to raw pcm by audio players?
Usually, an application that plays encoded files (be it audio or video) will need to decode that file to a format that the target interface (be it a video or audio interface) can output on a standard ...
- 2,794
5
votes
Does the .wav file created from a .mp3 file have better quality than the .mp3 file itself?
MP3 is the 'colloquial' name for "MPEG 1 Layer 3" audio encoding. The purpose of mp3 encoding is to reduce the overall size of an audio data stream whilst maintaining an acceptable level of listening ...
- 8,735
4
votes
Does the .wav file created from a .mp3 file have better quality than the .mp3 file itself?
In order to make sound, your computer must drive the speaker with a time-varying voltage. In order to create the time-varying voltage, the computer must send a sequence of numbers to a Digital-to-...
- 141
2
votes
How can I learn to write audio decoding software
I recommend you to start with pulse-code modulation files (.WAV, .AIFF, etc.): https://en.wikipedia.org/wiki/Pulse-code_modulation
What is stored in a typical CD-quality PCM file is nothing more than ...
- 233
2
votes
Does the .wav file created from a .mp3 file have better quality than the .mp3 file itself?
You cannot get detail from nothing
Even though WAV files can hold more detailed sound, that doesn't mean they always do. Converting from MP3 to WAV would be one such scenario, the converter cannot ...
- 121
1
vote
Audio equivalent to QR code
Dual-tone multi-frequency signaling (DTMF) seems to be the obvious answer, because it also has two dimensions (two sets of tones).
To make the tones more tolerable, you could move them to a lower ...
- 121
1
vote
Accepted
Is audio better quality through a DAC meant for microphone encoing? (U-Phoria UM2)
An external ADC/DAC chain might sound better than if you did it in the PC.
Is it really? Possibly, or it could be apophenia or other psychological improvement. You would need to do controlled ...
1
vote
Is it possible for Matlab to read and decode an mp3 file?
Supported codecs and containers for the audioread function of matlab can be found at:
https://www.mathworks.com/help/matlab/ref/audioread.html
- 8,735
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 ...
- 8,735
1
vote
Does the .wav file created from a .mp3 file have better quality than the .mp3 file itself?
No. This is about data resolution.
Converting WAV to MP3 gets your data compressed, with loss.
Converting MP3 to WAV gets your data expanded, without loss (But the loss presumably already has taken ...
- 121
1
vote
Does the .wav file created from a .mp3 file have better quality than the .mp3 file itself?
Nope. Data (waveform) and Encoding (.mp3 / .wav) are things independent of each other.
The same waveform encoded in both mp3 and wav, will produce a different decoded waveform when run thru the ...
- 111
Only top scored, non community-wiki answers of a minimum length are eligible