5
votes
Accepted
Which acoustic spectogram shows higher quality of audio file?
What you are asking is impossible to determine from a spectrogram. Spectrograms indicate frequencies present, not the quality of the audio. There may be loss of fine detail in one that would barely ...
- 8,142
5
votes
Does sound lose quality if sped up and then slowed down back to normal speed?
It depends what method is used.
If it's simply played back 'faster' without actually changing the data, then of course there is no lasting damage. This would be how a simple sampler would ordinarily ...
- 8,405
3
votes
How can I create 8-bit audio files?
Audacity will happily output 8 bit wave files. Choose export > other uncompressed then MS wav and 8 bit unsigned.
- 31
2
votes
Which acoustic spectogram shows higher quality of audio file?
Best audio quality is difficult to assess objectively.
What you can say from the given audiograms is (as you mentioned) that N° 3 includes more high frequencies, which is usually considered better.
...
- 2,834
2
votes
Accepted
How can I detect the sample and bit rate coming from my iPhone?
TL;DR: It appears the iPhone 6 supports 24-bit audio and 48 kHz playback.
So I found a way to empirically test playback.
This first screenshot shows a recording of playback over iPhone USB into ...
2
votes
How can I detect the sample and bit rate coming from my iPhone?
Unlike some earlier models of iOS devices, the DACs and ADCs in the iPhone 6s and 7 support native sample rates of 48000. You can experimentally test for this by writing an iOS app that configures ...
- 171
2
votes
Which spectrogram shows higher quality of the song?
You are barking up completely the wrong tree. This is sound. We don't hear sound with our eyes, we listen with our ears. You cannot tell whether a sound is "better quality" than another sound by ...
- 8,815
2
votes
Accepted
Which spectrogram shows higher quality of the song?
The upper one is definitey the better one.
Spectrograms (like the ones you produced with Spek) are used to display and inspect tendencies over time. For example if some noisy signal is present all ...
- 3,782
2
votes
Does transmission of sound through laser beam affects its quality?
Is it possible to do so? Absolutely. Lasers are one of the fastest and most versatile transmitters around. Fiber optics, which works by shooting a laser down an optical fiber, is the bread and ...
- 8,142
1
vote
Spotting a fake flac using spectrogram
This looks "extended" because of the (most probably) linear scale that your spectrogram is using on the frequency axis. It should look way more common if you switch it to log or similar.
@...
1
vote
Accepted
Is it okay to increase the gain of the master stereo output if enough headroom is available?
There's shouldn't be any quality loss if you're not clipping. The noise floor, if any, would be louder but the Signal-to-Noise Ratio would stay the same because you're applying a constant gain. You ...
1
vote
Quality loss when using high amounts of gain in DAW instead of recording louder
It may make a difference.
Your sound card (and whatever else comes after your pre-amp) will inevitably add a certain level of noise to the signal itself, as will the pre-amp itself.
If your pre-amp ...
- 11
1
vote
My keyboard recordings sound tinny/low quality
As the recording sounds perfectly "within acceptable parameters" on my studio monitors, maybe either your piano sound in the room is 'too fat' & you have just got used to how it sounds... or your ...
- 8,405
1
vote
How can I detect the sample and bit rate coming from my iPhone?
Bit depth is specific to certain file types, most notably Wav. Because the standard procedure of a music application is to play a compressed version of a file such as Mp3 or Aiff it throws bit depth ...
- 151
1
vote
Accepted
FLAC --bps setting real meaning
According to the man page, --bps specifies the bits per sample. As far as I can tell, this parameter controls the data that will be encoded using FLAC, and can have a lossy effect. For example, here's ...
- 145
1
vote
Accepted
Do I lose any quality when trimming an MP3 with Adobe Audition?
Yes, you ALWAYS lose quality when open a file created with lossy compression (i.e. virtually all flavors of MP3) It may not be very much, but it is unavoidable. That is why it is called "lossy".
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- 1,869
Only top scored, non community-wiki answers of a minimum length are eligible