发明名称 |
FREQUENCY TRANSPOSITIONAL HEARING AID WITH DIGITAL AND SINGLE SIDEBAND MODULATION |
摘要 |
Apparatus and method for shifting the frequency range of an audio frequency range signal using digital frequency shifting and single sideband amplitude modulation techniques. In one embodiment, the audio signal (2) is shifted to an ultrasonic frequency range utilizing digital signal processing techniques in which an audio frequency signal is frequency shifted by modulation to a carrier frequency and in which a single sideband modulated signal (6) is formed.
|
申请公布号 |
WO9525414(A1) |
申请公布日期 |
1995.09.21 |
申请号 |
WO1995US02880 |
申请日期 |
1995.03.16 |
申请人 |
HEARING INNOVATIONS INCORPORATED |
发明人 |
DIABACHI, FARID;RICHARDSON, CHARLES, S.;LIPPA, ARNOLD, S. |
分类号 |
G10L21/04;H03H17/00;H04R25/00;(IPC1-7):H04R25/00 |
主分类号 |
G10L21/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|