128K AAC audio is unlistenable

Originator:craig.hockenberry
Number:rdar://19388880 Date Originated:1/6/2015
Status:Duplicate/18707228 Resolved:
Product:OS X Product Version:10.10.1 (14B25)
Classification:Serious Bug Reproducible:Always
 
Summary:
Some AAC audio streams are unlistenable.

The amount of audio degradation varies: sometimes it's just a "ringing" at high frequencies, other times it's a painful screeching noise.

Steps to Reproduce:
1. Tune into one of the following URLs using iTunes 12.0.1.26

http://stream-dc1.radioparadise.com/aac-128
http://stream-uk1.radioparadise.com/aac-128
http://stream-ru1.radioparadise.com:9000/aac-128

2. Listen


Expected Results:
The audio should play without any degradation.


Actual Results:
Eventually, you'll want to rip your ears out.

Here's a sample:

http://files.iconfactory.net/craig/bugs/128k.m4a


Version:
10.10.1 (14B25)

Notes:
The audio was reproduced using a Nuforce ┬ÁDAC connected to the USB port on the back of an Apple Thunderbolt Display. It was recorded using the Voice Memos app on my iPhone 6. A .spx file is attached.

The same streams play without any problems on my Squeezebox 2 and Squeezebox Boom. They also played fine in Mavericks with iTunes 11.

A 64K stream from the same station plays correctly:

http://stream-tx1.radioparadise.com/aac-64

http://files.iconfactory.net/craig/bugs/64k.m4a

Comments


Please note: Reports posted here will not necessarily be seen by Apple. All problems should be submitted at bugreport.apple.com before they are posted here. Please only post information for Radars that you have filed yourself, and please do not include Apple confidential information in your posts. Thank you!