公开(公告)号：US3681756A

公开(公告)日：1972-08-01

申请号：US3681756D

申请日：1970-04-23

Applicant: INDUSTRIAL RESEARCH PROD INC

Inventor： BURKHARD MAHLON D ,  PETERS RICHARD W

IPC: G10L21/00 ,  G06F3/16 ,  G10L1/08 ,  H03K13/22

CPC classification number: G10L21/00

Abstract: A system for multiplying the frequencies of a speech signal, or other audio signal, by a given multiplication factor, comprising an analog-digital converter for converting an audio signal to a digital signal having a bit rate f1 and means for temporarily storing that digital signal. The system further comprises apparatus for reading out the stored digital signal, in groups of n digits, at a bit rate f2, with means for synchronizing the readout apparatus to connect the groups of n digits in sequence. A digital-analog converter uses the digital readout to develop a speech signal modified in frequency in accordance with the rate f1/f2 but having the same time span as the original speech signal.

Abstract translation: 一种用于将语音信号或其他音频信号的频率乘以给定乘法因子的系统，包括用于将音频信号转换为具有比特率f1的数字信号的模拟数字转换器，以及用于临时存储该数字信号的装置 。 该系统还包括用于以比特率f2以n位数组的方式读出存储的数字信号的装置，具有用于同步读出装置以依次连接n位数组的装置。 数字模拟转换器使用数字读出器来根据速率f1 / f2开发频率修改的语音信号，但是具有与原始语音信号相同的时间跨度。

公开(公告)号：US3692264A

公开(公告)日：1972-09-19

申请号：US3692264D

申请日：1970-07-13

Applicant: INDUSTRIAL RESEARCH PROD INC

Inventor： BURKHARD MAHLON D ,  MAXWELL RUSSELL J

IPC: F16F1/42 ,  G04B43/00 ,  H04R1/08 ,  G04C3/00

CPC classification number: H04R1/08 ,  F16F1/424 ,  F16F2236/022 ,  G04B43/002

Abstract: Shock isolation mounts for miniature microphones, sound reproducers, and other fragile devices, in which the device is suspended between thin film support members mounted on a rigid frame in a configuration such that shock stresses of substantial magnitude occurring in either direction along a given path are absorbed almost entirely by tensional stress of one or more of the film support members. Vibration isolation is also provided, separately from the shock isolation, by means of one or more vibration absorption elements, formed of rubber or other material of high resilience and high compliance in compression, interposed between the fragile device and support members or between the support members and the frame or between the frame and an external support structure. The support members are usually made of plastic, such as a polyester film, and may be pre-formed to fit the external configuration of the transducer or other device or may be flat strips with no pre-forming required.

公开(公告)号：US3681531A

公开(公告)日：1972-08-01

申请号：US3681531D

申请日：1970-09-04

Applicant: INDUSTRIAL RESEARCH PROD INC

Inventor： BURKHARD MAHLON D ,  PETERS RICHARD W

IPC: G10K15/12 ,  H04R3/00

CPC classification number: G10K15/12 ,  Y10S84/26

Abstract: A plural sound delay system for use in sound reinforcement in auditoria and in other applications, comprising a digital encoding system for converting an analog audio signal to digital form, a progressive digital data store for storing the digital signal, plural readout means for reading data from the store after any one of a plurality of different storage intervals, and at least one decoding system for regenerating a delayed audio analog signal from one of the digital readouts.

Abstract translation: 一种用于听觉和其他应用中的声音增强的复数声音延迟系统，包括用于将模拟音频信号转换为数字形式的数字编码系统，用于存储数字信号的渐进式数字数据存储器，用于从 存储在多个不同存储间隔中的任何一个之后的存储器，以及用于从数字读出中的一个重新生成延迟的音频模拟信号的至少一个解码系统。