Improving an old recording

[kozikowski]

Post two seconds of Room Tone. Your live vocal microphone before or after you sing. Do it in WAV.
Koz

[Sam Houston]

What?

[Trebor]

Post two seconds of Room Tone. Your live vocal microphone before or after you sing. Do it in WAV.Koz

What?

Having a couple of seconds of audio where the mic is on but there is no performance is useful when subsequently processing the track. Such audio is the noise-floor = artifact-noise , (e.g. mains hum), & any faint ambient-noise in the room , (e.g. air-conditioning/central-heating). This couple of seconds of "silence" dosen't make it into the final recording.

[Sam Houston]

Oh ok. I always leave open space at the beginning of each track so after recording I can select that area and use "Noise Removal" on the whole track.

[Sam Houston]

Ok. I got the song remixed and vocals re-recorded. I was going to upload it this morning but now I can't. I put it on my MP3 player to transport it but when I got here (to work) this morning the file is jacked. It's correct and fine on my computer at home at a bit rate of 224kbps. But somehow the MP3 player changed the one on it to 448kbps, which means it's just squealing noise and no program will open it. So I don't know what's going on. I've transported many MP3's this way with no problems. So, I'll just have to wait until I get back home this evening and upload it from there.

[Trebor]

Ok. I got the song remixed and vocals re-recorded. I was going to upload it this morning but now I can't.

If you were trying to upload it here the maximum size of an attachment to a post in this forum is 1Mb. A 3minute stereo mp3 will be several Mb in size and too big to attach to a post here.

... It's correct and fine on my computer at home at a bit rate of 224kbps. But somehow the MP3 player changed the one on it to 448kbps, which means it's just squealing noise and no program will open it. So I don't know what's going on. I've transported many MP3's this way with no problems.

The maximum possible bit-rate for mp3 format is 320kbps.
You may be confusing sample-rate for bit-rate, which are different things, the default sample-rate in Audacity is 44100Hz = 44.1kHz, a sample-rate of 48kHz is possible.

[Robert J. H.]

... It's correct and fine on my computer at home at a bit rate of 224kbps. But somehow the MP3 player changed the one on it to 448kbps, which means it's just squealing noise and no program will open it. So I don't know what's going on. I've transported many MP3's this way with no problems.

The maximum possible bit-rate for mp3 format is 320kbps.
You may be confusing sample-rate for bit-rate, which are different things, the default sample-rate in Audacity is 44100Hz = 44.1kHz, a sample-rate of 48kHz is possible.

There are higher bit rates than 320 kbps possible. Each player has its own maximum. I think there's a table on the Lame website.
However, there's been some frequency maximum at 10000 Hz for the sample in the first post, so I wonder if the actual used sample rate is 22025 Hz on the export side and 44100 Hz on the player side.

[Sam Houston]

I realize that 320 is the typical max. And no, I'm not confusing anything. Bit rate is bit rate. All I'm saying is that on my computer at home it's fine and is at 224kbps. When I put it on my MP3 player, somehow the bit rate jumped to 448kbps on the copy that's on the MP3 player and is unplayable.

[Trebor]

If it was an mp3 made using Audacity then the actual bit-rate cannot be above 320kbps : that's as high as it goes ...

Audacity mp3 export options.gif (14.13 KiB) Viewed 873 times

http://manual.audacityteam.org/o/man/mp ... tions.html

[Robert J. H.]

If it was an mp3 made using Audacity then the actual bit-rate cannot be above 320kbps : that's as high as it goes ...

Audacity mp3 export options.gif

http://manual.audacityteam.org/o/man/mp ... tions.html

You can go higher by using the "External Program option".
However, the bit rate of 224 is not exceeding this value. I only wonder why the bit rate is interpreted as 448 by the player.
Is the bit rate constant, variable or average?