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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 ...
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5 votes
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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 ...
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4 votes
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What impact does applying gain to a digital audio signal have on playback?

First, lets start by clarifying that "volume" isn't a particularly technical concept. Most generally "volume" refers to SPL or sound pressure level which is the amount of pressure being exerted by ...
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4 votes
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How lossless is my lossless music?

Audio sampled at 44.1 kHz (like normal audio CDs) can in theory contain content up to the Nyquist limit of 22.05kHz. However, you need a filter to remove all content above that limit, otherwise it ...
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  • 2,863
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.
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  • 31
3 votes

How can I find the audible difference between a flac audio and it's corresponding mp3 file

That depends on what you mean by audible. You can invert the phase of one and add it back to the other and it will play only what the difference between the two is, however you will hear artifacts ...
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  • 8,081
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. ...
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  • 2,613
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 ...
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2 votes
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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 ...
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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 ...
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  • 8,081
2 votes

using many USB inputs

Generally no, using multiple inputs shouldn't lower quality as long as the USB controllers still have sufficient bandwidth for the devices to function. If you use a hub to connect everything, then ...
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  • 8,081
2 votes

Audio interface or Mixer with built-in audio interface?

The biggest problem with combining your mixer and interface is that most of the cheaper options have sub-par pre-amps, which would definitely affect your quality. I would personally recommend ...
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2 votes

How can I find the audible difference between a flac audio and it's corresponding mp3 file

Audible differences is something different than electrically measurable differences. The techniques mentioned (by computing the difference between the two signals) allow to measure differences between ...
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  • 2,613
2 votes

What impact does applying gain to a digital audio signal have on playback?

As far as digits are concerned, you can multiply by any "gain" you wish, as long as you do not overflow (-127 to 128 for 8 bit; -32676 to +32678 for 16bit audio; ±8.3x106 for 24bit audio, and up to ±1....
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  • 5,551
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. @...
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1 vote
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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 ...
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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 ...
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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 ...
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  • 7,024
1 vote
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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 ...
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1 vote

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 ...
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  • 161
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 ...
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1 vote
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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 ...
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  • 145
1 vote
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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 vote

What are the sources of signal loss in cables and their connections?

There are several major ways a signal can become distorted, these impact both digital and analog signals, but in different ways. One of the largest sources (on long runs and at connectors) is ...
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  • 8,081
1 vote

best quality of recording synthesizer

Reading the above, I don't think that your synth, or the interface is the issue. Running a synth directly into an interface normally just gives a pretty boring copy of the original tone. When I'm ...
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  • 198
1 vote

My songs lose quality on high volume

That means you are on the right track. On high volumes our ears have a flatter response. That means that on higher volumes, we start to hear more bass and more highs. So a very simple solution to ...
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1 vote

Best sounding podcast

Content: "Puppies and Sunshine" (defunct) with Otto and George. (RIP) The Monday Morning Podcast w/ Bill Burr. Just Burr and a mic. KISS-simple, outstanding. "MMM hmmm" w/ Bobbie Doolie celebrity ...
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