Details are presented of the apt-X100 16-bit to 4-bit digital audio compression algorithm for real-time transmission of very high quality audio at 128kbits/s. Designed to directly replace digital PCM hi-fi audio links, apt-X100 is implemented on a single masked-ROM DSP and boasts exceptional tolerance to bit errors, low coding delay, zero-overhead automatic data synchronization and de-multiplexing, and an auxiliary data transmission facility. A complete half-duplex dual-channel encode/decode implementation within a single DSP is also reported.

Authors: Smyth, Mike; Smyth, Stephen
Affiliation: Audio Processing Technology Ltd., Belfast, BT9 5AF, N. Ireland
AES Conference: 10th International Conference: Images of Audio (September 1991)
Paper Number: 10-009
Publication Date: September 1, 1991
Subject: Images of Audio

Click to purchase paper as a non-member or you can login as an AES member to see more options.

No AES members have commented on this paper yet.

Subscribe to this discussion

To be notified of new comments on this paper you can subscribe to this RSS feed. Forum users should login to see additional options.

Start a discussion!

If you would like to start a discussion about this paper and are an AES member then you can login here:
Username:
Password:

If you are not yet an AES member and have something important to say about this paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.