Title:
VOICE TIME BASE CONVERTER
Document Type and Number:
Japanese Patent JP3189587
Kind Code:
B2
Abstract:
PURPOSE: To provide a voice time base converter which can reduce the dicarding of the data as much as possible and automatically convert the speed of the signals to a more-easy-to-listen speed while keeping the musical interval of acoustic signals during a recording in reproducing the signals at an M (≥1) times speed of the recording.
CONSTITUTION: Voices reproduced at the M times speed from a recording and reproducing section 101 are converted into digital signals by an A/D converter 102 with a period T/M. These signals are discriminated to be sounded or silent by a sound and silence discriminating section 103 and only sound portions are accumulated in a buffer memory 105 by a writing control section 104. A reading control section 106 reads the data from the memory 105 with the period T and a time axis control section 109 performs time base conversion processing of the data. A memory residual amount monitoring section 107 measures a memory residual amount from the present writing and reading positions of a sequential buffer memory. Based on the measurement results, an adaptive speed control section 108 decides the speed of a time base conversion based on the rule beforehand set corresponding to the memory residual amount.
Inventors:
Takeshi Norimatsu
Masayuki Misaki
Koji Watanabe
Norikazu Ueno
Masayuki Misaki
Koji Watanabe
Norikazu Ueno
Application Number:
JP22013194A
Publication Date:
July 16, 2001
Filing Date:
September 14, 1994
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
H04N5/783; G10L19/00; G10L21/003; G10L21/04; G10L21/045; G11B20/02; (IPC1-7): G10L21/04
Domestic Patent References:
| JP7192392A | ||||
| JP573089A | ||||
| JP7191695A | ||||
| JP6289895A | ||||
| JP3205656A |
Attorney, Agent or Firm:
Fumio Iwahashi (2 others)