会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 100. 发明专利
    • DIGITAL MULTI-FUNCTION TELEPHONE SET
    • JP2001036613A
    • 2001-02-09
    • JP20374799
    • 1999-07-16
    • MATSUSHITA ELECTRIC IND CO LTD
    • HONDA AKIRA
    • H04M1/00H04M1/253H04M1/58H04M1/60
    • PROBLEM TO BE SOLVED: To obtain adjustment of a speech characteristic required for a digital multi-function telephone set and each function or the like of a speech system on request with a simple configuration at a low cost. SOLUTION: A DSP 3 provided inside a telephone set has an analog input output port that can realize a CODEC function and processes various functions of a speech through execution of software. A D/A converter section 51 of the DSP 3 executes mutual conversion between an analog signal and a PCM signal. A PCM/linear conversion section 16 executes the mutual conversion between the PCM signal and a linear signal used for computation inside the DSP 3. A speech control section 17 executes sound level, side tone level adjustment and frequency characteristic adjustment for a signal converted into the linear signal. A hand-free conversion section 18 monitors a transmission level to a speaker and a level received from a microphone 7, adjusts the level, switches transmission/reception through the level adjustment to execute a hand-free speech. A Tone generating section 19 generates a Tone required externally and outputs it via the speech control section 17.