Audio synchronization is an issue any time two or more audio signals need to be compared. For instance, when measuring audio quality subjectively or objectively, a reference audio signal is compared to an impaired version. In both cases it is critical that the two audio signals be synchronized in time. The presence of delays between audio signals can result in distorted quality measurements.

CRC-TimeSync is a Windows 95/98/NT/2000/XP application that offers a simple solution to the task of audio file synchronization. The layout and controls of the graphical user interface provide the means to quickly establish sample accuracy between source files.

CRC-TimeSync also includes tandeming features which greatly simplify the task of recording source material through external audio processors and codecs. The user needs only to specify the reference file and the number of generations desired. This can be used to measure the effect of multiple generations of audio encoding and decoding.

CRC-TimeSync is available as a standalone program or integrated with CRC-SEAQ (System for the Evaluation of Audio Quality). Files can be shared between the two programs, which together create a powerful audio testing software suite.

Key Features:

• Record and play back audio files via the system audio card
• Manual or automatic alignment of audio files
• Flexible zoom controls to view one or two files simultaneously
• Remove unwanted segments from the beginning or end of audio files
• Drag and drop for quickly loading audio files
• Seamless integration with CRC-SEAQ
• Supports CRC-SEAQ session files
• Batch syncronization with user-definable offsets
• View the correlation between audio files
• Audio-tandeming (requires a full duplex audio adapter)
• Parse or join multiple audio files
• Compatible with virtually any audio card that provides Windows MME support
• Supports mono and 2-channel audio sequences
• Supports 8, 16, 20, 24, and 32 bits/sample, and normalized floating point
• Supports sampling rates of 8, 11.025, 22.05, 32,44.1, 48, 88.2 and 96 kHz
• Supports Intel and Motorola byte ordering for audio samples
• Compatible with Microsoft WAV and headerless PCM files

For More Information:

Mr. Louis Thibault, Manager, Advanced Audio Systems
Communications Research Centre Canada
3701 Carling Ave., P.O. Box 11490, Station H
Ottawa, Ontario, Canada K2H 8S2
Tel: 1 613 990 4349
Fax: 1 613 993 9950
Email: louis.thibault@crc.gc.ca
Web: www.crc.gc.ca/aas

Hardware Requirements

Pentium Pro or Pentium II CPU 400MHz or better, Minimum 128MB RAM, 5200rpm or faster hard drive (IDE or SCSI), Microsoft compatible three-button mouse, Audio adapter with Windows MME support, Windows 95/98/NT4/2000.