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 µDAC 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


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