Search found 1646 matches

by Martin Hairer
Wed Jan 13, 2021 4:20 pm
Forum: Discussion
Topic: MTLComiler error again
Replies: 2
Views: 58

Re: MTLComiler error again

Metal seems rather unstable under High Sierra; this is fixed in Catalina and Big Sur. (And wasn't a problem in Sierra either.)
by Martin Hairer
Mon Jan 11, 2021 11:37 pm
Forum: Discussion
Topic: Amadeus Pro slow file I/O
Replies: 7
Views: 126

Re: Amadeus Pro slow file I/O

By spinning the writing itself off to a separate thread I can get the write time down to about 3.8 seconds, same as Audacity. I guess that's getting pretty close to optimal. (Speeding up by a factor two isn't realistic since there's still a data pipeline that needs to be synced...) I'll probably inc...
by Martin Hairer
Mon Jan 11, 2021 10:37 am
Forum: Discussion
Topic: Amadeus Pro slow file I/O
Replies: 7
Views: 126

Re: Amadeus Pro slow file I/O

I've profiled the writing. There is a smallish (~10%) overhead coming from applying the volume envelope to the sound. This could in principle be sped up by detecting the case of a completely flat envelope at the start and treating it as a special case, but I would think that it's not worth the effor...
by Martin Hairer
Fri Jan 08, 2021 11:44 am
Forum: Discussion
Topic: Amadeus Pro slow file I/O
Replies: 7
Views: 126

Re: Amadeus Pro slow file I/O

You can speed things up by making sure the whole file is read into RAM: increase the "Maximal RAM size" in the advanced preferences to something like 8096. (That's assuming your computer has at least 16GB of RAM, otherwise you may end up swapping, which is actually *less* efficient.) With this, a 65...
by Martin Hairer
Fri Jan 08, 2021 10:41 am
Forum: Discussion
Topic: Amadeus Pro inconsistencies with Apple Lossless
Replies: 17
Views: 3435

Re: Amadeus Pro inconsistencies with Apple Lossless

Yes, I received it and was able to reproduce the problem, thanks!
by Martin Hairer
Wed Jan 06, 2021 9:27 am
Forum: Discussion
Topic: Amadeus Pro inconsistencies with Apple Lossless
Replies: 17
Views: 3435

Re: Amadeus Pro inconsistencies with Apple Lossless

Just send me a WeTransfer / Dropbox / iCloud link to martin@hairersoft.com.
by Martin Hairer
Wed Jan 06, 2021 9:27 am
Forum: Discussion
Topic: Amadeus Pro slow file I/O
Replies: 7
Views: 126

Re: Amadeus Pro slow file I/O

Chances are that some of that sound data is being stored on disk, so it's a simultaneous read / write rather than a pure write. Also, even though WAV files aren't compressed, the sound data has to be converted from its internal 32-bit floating point representation to the 16 / 24bit integer represent...
by Martin Hairer
Tue Jan 05, 2021 9:50 pm
Forum: Discussion
Topic: Feature request: Option to keep ALL metadata when editing a file
Replies: 4
Views: 118

Re: Feature request: Option to keep ALL metadata when editing a file

So my point is that AP should simply leave anything that it doesn't read and know as is. :) This would be a bad idea since the 'bext' chunk contains some information about the waveform (peak level, peak loudness, etc) as well as a unique material identifier (UMI) used to identify the file. Changing...
by Martin Hairer
Tue Jan 05, 2021 9:39 pm
Forum: Discussion
Topic: Bug? 2 Sample Rate Converters = 2 different results
Replies: 4
Views: 92

Re: Bug? 2 Sample Rate Converters = 2 different results

Sorry, I cannot reproduce this, both resampling methods give me identical sonograms:
Image
by Martin Hairer
Tue Jan 05, 2021 9:28 pm
Forum: Discussion
Topic: Amadeus Pro inconsistencies with Apple Lossless
Replies: 17
Views: 3435

Re: Amadeus Pro inconsistencies with Apple Lossless

Would you be able to email me a link to one of these files? (Before it has doubled in size.)
by Martin Hairer
Tue Jan 05, 2021 2:25 pm
Forum: Discussion
Topic: Feature request: Option to keep ALL metadata when editing a file
Replies: 4
Views: 118

Re: Feature request: Option to keep ALL metadata when editing a file

Hi, could you please send me a link to a sample file? Thanks, Martin.
by Martin Hairer
Tue Jan 05, 2021 2:23 pm
Forum: Discussion
Topic: Bug? 2 Sample Rate Converters = 2 different results
Replies: 4
Views: 92

Re: Bug? 2 Sample Rate Converters = 2 different results

Which file format did you save to? If it wasn't a lossless format, you may just be seeing artefacts from the compression, rather than the rate conversion.
by Martin Hairer
Tue Jan 05, 2021 2:20 pm
Forum: Discussion
Topic: Amadeus Pro inconsistencies with Apple Lossless
Replies: 17
Views: 3435

Re: Amadeus Pro inconsistencies with Apple Lossless

What was the original codec used? If the file was an AAC file to start with, this would explain what you see.
by Martin Hairer
Sat Dec 05, 2020 10:54 pm
Forum: Discussion
Topic: DVD Audio Burning?
Replies: 1
Views: 202

Re: DVD Audio Burning?

That's not possible, sorry, only Audio CD. Maybe someone else has suggestions for DVD Audio authoring software on macOS.
by Martin Hairer
Wed Dec 02, 2020 10:23 pm
Forum: Discussion
Topic: Playback positions
Replies: 1
Views: 167

Re: Playback positions

If you have an audio interface with two stereo outputs, you can assign different outputs to "front" and "back" in its advanced settings. If you only have a single stereo output, then it has no effect.