Search found 59476 matches

by steve
Mon Jun 10, 2019 8:02 am
Forum: Windows
Topic: converting SMF (standard MIDI file) to audio
Replies: 5
Views: 1835

Re: converting SMF (standard MIDI file) to audio

I think we can play them, but not open them or convert to anything else. We can't "convert" them. As you say, MIDI is not "audio", and nothing can "convert" a MIDI file into something that it isn't. We probably can "play and record", though I've not tested th...
by steve
Mon Jun 10, 2019 7:51 am
Forum: Windows
Topic: "Export Multiple" mp3 files are 64 kbps when I wanted "Insane" 320 kbps
Replies: 3
Views: 152

Re: "Export Multiple" mp3 files are 64 kbps when I wanted "Insane" 320 kbps

I've just tested it here (on Linux), and the Exported files have the exact MP3 format that I select in the Export Multiple dialog. Create a new, empty folder somewhere, Do an Export Multiple into it (File menu > Export > Export Multiple). Ensure that the MP3 settings in the Export Multiple interface...
by steve
Mon Jun 10, 2019 12:10 am
Forum: Windows
Topic: How to remove some of the little white dots added by Envelope Tool?
Replies: 3
Views: 329

Re: How to remove some of the little white dots added by Envelope Tool?

Just click and drag them up or down off the track.
by steve
Sun Jun 09, 2019 5:32 pm
Forum: Windows
Topic: multitrack USB port recording
Replies: 3
Views: 147

Re: multitrack USB port recording

If you have a 2 channel USB interface that can take both a guitar pickup and a microphone at the same time (such as a Behringer UMC 202 ), then you can set Audacity to record as "2 channel (stereo)", and then split the track into two separate mono tracks after you have recorded. See: https...
by steve
Sun Jun 09, 2019 5:27 pm
Forum: Windows
Topic: Disable automatic low pass filter when resampling
Replies: 15
Views: 983

Re: Disable automatic low pass filter when resampling

the sheer act of selecting 8khz in the drop down after using the nyquist command does the exact same effect as just selecting resample and selecting 8khz. No it doesn't. When you select Resample, the audio is resampled by "soxr" (a high quality resampling library) which applies anti-alias...
by steve
Sun Jun 09, 2019 3:20 pm
Forum: Audio Processing
Topic: Multiplying mix [CLOSED]
Replies: 29
Views: 3078

Re: Multiplying mix

But it is relevant because Nyquist performs operations on floating point numbers. OK, I'll answer this within the specific context of Nyquist programming: Nyquist defines division by zero as an error. Nyquist is written in C, which defines division as: The result of the/operator is the quotient fro...
by steve
Sun Jun 09, 2019 11:51 am
Forum: Windows
Topic: Media Info doesn't match Format Options selected for Exported MP3's
Replies: 12
Views: 488

Re: Media Info doesn't match Format Options selected for Exported MP3's

Adding a reference to DVDdoug's reply:

The bit-rates quoted in Audacity's VBR / Preset MP3 settings are "typical bit rates" for the selected quality settings.
There's additional information here: http://wiki.hydrogenaud.io/index.php?ti ... nformation
by steve
Sun Jun 09, 2019 11:45 am
Forum: Audio Processing
Topic: Multiplying mix [CLOSED]
Replies: 29
Views: 3078

Re: Multiplying mix

Did you intentionally disapprove my reply so that you can "win the argument"? No. I disapproved your post because it had nothing to do with Audacity, and this is the Audacity forum. I had already told you that this is not an appropriate forum for discussion about mathematics and/or IEEE 7...
by steve
Sun Jun 09, 2019 11:39 am
Forum: macOS
Topic: Audacity recording shorter than Zoom recording
Replies: 2
Views: 149

Re: Audacity recording shorter than Zoom recording

How is it possible that the two shots are not the same? The clock speed in either the computer sound card, or in the Zoom, or both, may be slightly off, so they are not recording at exactly 44100. My guess is that the Zoom will be pretty close to 44100 Hz, and the computer sound card is running abo...
by steve
Sun Jun 09, 2019 11:20 am
Forum: Audio Processing
Topic: True white noise
Replies: 18
Views: 1846

Re: True white noise

For testing the response of a filter, it can be useful to generate "white noise" as a single high amplitude sample on an otherwise silent track, like this: test-sample.wav firsttrack004.png We can see that the spectrum is uniform across the entire spectrum, but only momentarily: firsttrack...