In the spectrographic analysis of voice exemplars, there is a question of the impact of commercially available compression schemes on the visual representation of the voice. Specifically, there is a question whether or not the codec reconstruction of the time-domain waveform might alter features of the wide-band spectrogram, including formant shape and position. This paper contributes a collection of comparative analyses of English speech exemplars that are recorded simultaneously via both linear and compression-based recording methods. G.723-encoded recordings (max 6.3kbps, used in IC-recorders and surveillance recording equipment) and the Sony Memory stick format using MSV LPEC-SP compression are evaluated.

Authors: Begault, Durand R.; Brixen, Eddy B.
Affiliations: Charles M. Salter Associates; Poza Consulting Services(See document for exact affiliation information.)
AES Conference: 26th International Conference: Audio Forensics in the Digital Age (July 2005)
Paper Number: 3-1
Publication Date: July 1, 2005
Subject: Audio Forensics in the Digital Age

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.