Telephonic communications – Audio message storage – retrieval – or synthesis – Multilingual system or operation
Patent
1993-04-14
1995-05-09
Dwyer, James L.
Telephonic communications
Audio message storage, retrieval, or synthesis
Multilingual system or operation
379 67, 379 51, 365 45, 365200, 371 151, 371 211, H04M 164
Patent
active
054147581
ABSTRACT:
It is herein recognized that in an audio signal processing system, a DRAM chip for storing digitized audio signals and selected to include at least one inoperative memory location, is acceptable for use as a storage medium in that no noticeable error is produced on playback of the recorded signal due to the sampling rate of the audio signal and due to the relatively low rate of defects allowed. Furthermore, the use of a less-than-perfect DRAM chip for storing audio information is acceptable due to the substantially non-critical nature of audio signals, as opposed to the extremely critical nature of computer data.
REFERENCES:
patent: 4815122 (1989-03-01), Shefler
patent: 4850005 (1989-07-01), Hashimoto
patent: 4891835 (1990-01-01), Leung et al.
Page of data sheets for the TMS4C102-series Dynamic Random Access Memories (DRAM).
Preliminary application note for the Samsung One Chip Voice Recorder (KD5915).
Article entitled Audio DRAM 1MEG X 1 Audio DRAM, publ. by Micron Technology, Inc., dtd. Sep. 1989.
Dwyer James L.
Emanuel Peter M.
Lenihan Thomas F.
Thomson Consumer Electronics Inc.
Tripoli Joseph S.
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