Title:
PROCESSING AND CORRECTING EQUIPMENTS FOR VOICE SIGNAL
Document Type and Number:
Japanese Patent JPH06291784
Kind Code:
A
Abstract:
PURPOSE: To eliminate as much distortion as possible that is produced when an audio signal is undergone amplitude modulation. CONSTITUTION: This device processes and corrects a previous sound signal that is amplified in an amplification system of a transmitter which is serially connected to a filter input of a transmitter that uses amplitude modulation and includes a projected number of modules that generate pulses having modulated width, and is provided with an A/D converter 8 which converts a sound signal to be sent into a digital sample, an interpolation circuit 9 which is connected to the output of the converter 8 and separately performs the calculation of a change ratio through linear interpolation and the value of a sound signal that is added to the input of the converter 8 through parabolic interpolation, and a storing means 10 which is connected to the output of the circuit 9 and stores a preliminary correction value of a cycle of a sound signal that is accessed with the correction value of the sound signal that is calculated by the circuit 9.
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Inventors:
FUIRITSUPU DO BOWARIU
Application Number:
JP13330393A
Publication Date:
October 18, 1994
Filing Date:
June 03, 1993
Export Citation:
Assignee:
THOMSON CSF
International Classes:
H04L25/17; H03F1/32; H03F3/217; H04L25/49; H04L27/04; (IPC1-7): H04L25/17; H04L25/49
Attorney, Agent or Firm:
Kazuo Sato (3 others)
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