46      iPhone_iPad_Mac_apple

Logic 9 down

I just submitted this bug report to Apple. Does anyone know what I may be doing wrong? Or perhaps any workarounds that don't involve pre-converting all these 24-bit ALAC files I have into something else before importing?

----------------------------

Summary:

If you import a 24-bit Apple Lossless file into a 24-bit project in Logic Pro 9.1.8, Logic automatically down-converts the file to 16-bit AIFF before adding it to the bin.

Steps to Reproduce:

1. One way to get good testing files: Set iTunes import preferences to Apple Lossless, find and select a 24-bit AIFF file in your iTunes library, select File->Create a New Version->Create Apple Lossless Version, rename the ALAC file so you can tell them apart, and now you have a 24-bit AIFF and a 24-bit ALAC to use in the following steps.

2. Open Logic, go to Logic->Preferences->Audio, and select 24-bit Recording.

3. Create an new Empty project.

4. Open the Media tab and browse through the iTunes Music file structure for the two test files from step 1 above.

5. Drag the 24-bit AIFF onto a track and wait for the progress windows to finish.

6. Drag the 24-bit ALAC onto a different track and wait for the progress windows to finish. Notice that there is an additional progress window that describes converting the sample rate (which is strange because the sample rate stays the same - it's the bit depth that's being changed).

7. Go to the Bin tab and look at the files in the bin.

Expected Results:

I expect there to be two 24-bit files.

Actual Results:

The AIFF file from importing the AIFF is 24-bit. The AIFF file from importing the ALAC file is 16-bit.

Version:

Logic 9.1.8 (17.00.67), OS X 10.9.1 (13B42)

BTW, would someone with Logic X mind testing to see if it does this too?

In fact, Apple's official response was for me to test to see if Logic X does this. Since I'm not sure I want to spend $200 just to test a bug for Apple (while I'm quite sure they have access to Logic X themselves :-P ), would someone with Logic X mind running this test and reporting back here?

Sadly I had to experience the same problem. I wanted to import a 44,1 kHz 24 bit ALAC into Logic Pro X (Version 10.0.6). The AIF that now is in my project is 44,1 kHz 16 bit.

Either we do not know how to properly import the files into logic or this is really a huge bug that Apple hasn't managed to solve meanwhile.

EDIT: I created a bug report (16837974)

Hi,

It's 2017 now and I recently upgraded to Logic X from logic 9.

I'm experiencing the problem exactly as described by Will Rees above, from back in 2014.

Has anyone solved this issue?

Help much appreciated.

Logic Pro X version 10.3.2

OS  X Sierra 10.12.6

According to some specs I  recently read,  it's a system wide codec that's doing the conversion, so... no matter the application you use to import an ALAC/CAF Apple lossless file, it's going to come in as 16-bit.

最後更新：2017-10-23 00:42:31

  上一篇： some features missing in my logic pro x 10.3.2

  下一篇： Alt+clicking a region (copying) does not work a...