FR2253443A5 - Educational unit for severely deaf - uses coding each sound in emitted audio signal - Google Patents

Educational unit for severely deaf - uses coding each sound in emitted audio signal

Info

Publication number
FR2253443A5
FR2253443A5 FR7342830A FR7342830A FR2253443A5 FR 2253443 A5 FR2253443 A5 FR 2253443A5 FR 7342830 A FR7342830 A FR 7342830A FR 7342830 A FR7342830 A FR 7342830A FR 2253443 A5 FR2253443 A5 FR 2253443A5
Authority
FR
France
Prior art keywords
sound
audio signal
unit
uses coding
emitted audio
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
FR7342830A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CARRAT ROLAND FR
Original Assignee
CARRAT ROLAND FR
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CARRAT ROLAND FR filed Critical CARRAT ROLAND FR
Priority to FR7342830A priority Critical patent/FR2253443A5/en
Application granted granted Critical
Publication of FR2253443A5 publication Critical patent/FR2253443A5/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B21/00—Teaching, or communicating with, the blind, deaf or mute
    • G09B21/009—Teaching or communicating with deaf persons

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Physics & Mathematics (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Electrically Operated Instructional Devices (AREA)

Abstract

The frequency range corresponding to the speech range is divided into n bands, and the range of audible perception of the deaf person is divided into a similar number of volume intensity intervals, so that each of the latter can be associated with one of the frequency bands. The white noise emitted by the unit is then intensity modulated, to represent the frequencies of the sound, and supplied to the ears of the deaf person. The unit has a sound input circuit (2), an analyzer (4), a synthesiser and coding circuit (6) and a circuit (8) for reconstructing the coded sounds. The analyzer (4) preferably comprises three pass-band filters (14, 16, 18) in parallel, each supplied by a single preamplifier (12).
FR7342830A 1973-11-30 1973-11-30 Educational unit for severely deaf - uses coding each sound in emitted audio signal Expired FR2253443A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7342830A FR2253443A5 (en) 1973-11-30 1973-11-30 Educational unit for severely deaf - uses coding each sound in emitted audio signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7342830A FR2253443A5 (en) 1973-11-30 1973-11-30 Educational unit for severely deaf - uses coding each sound in emitted audio signal

Publications (1)

Publication Number Publication Date
FR2253443A5 true FR2253443A5 (en) 1975-06-27

Family

ID=9128552

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7342830A Expired FR2253443A5 (en) 1973-11-30 1973-11-30 Educational unit for severely deaf - uses coding each sound in emitted audio signal

Country Status (1)

Country Link
FR (1) FR2253443A5 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2377189A1 (en) * 1977-01-17 1978-08-11 Beller Isi Internal sound sensitivity treatment system - with sound energy frequency modulated as inverse function of control modulation
FR2400241A2 (en) * 1977-08-11 1979-03-09 Carrat Roland Pigeon training and re-training scheme - employs coding of acoustic signal having frequency spectrum with blanketing curve possessing certain number of peak values (NL 7.3.78)
FR2469039A1 (en) * 1979-10-29 1981-05-08 Audio Psycho Phonologie Variable frequency response audio amplifier - has series of switchable filters to provide constant output for audiometry

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2377189A1 (en) * 1977-01-17 1978-08-11 Beller Isi Internal sound sensitivity treatment system - with sound energy frequency modulated as inverse function of control modulation
FR2400241A2 (en) * 1977-08-11 1979-03-09 Carrat Roland Pigeon training and re-training scheme - employs coding of acoustic signal having frequency spectrum with blanketing curve possessing certain number of peak values (NL 7.3.78)
FR2469039A1 (en) * 1979-10-29 1981-05-08 Audio Psycho Phonologie Variable frequency response audio amplifier - has series of switchable filters to provide constant output for audiometry

Similar Documents

Publication Publication Date Title
GB1348847A (en) Device for the audible reproduction of electrophysiological signals
FR2253443A5 (en) Educational unit for severely deaf - uses coding each sound in emitted audio signal
JPS5233517A (en) Multi-way loudspeaker system
JPS5289441A (en) Frequency band dividing filter
JPS547811A (en) Noise reduction unit of companding system
JPS5324828A (en) Vibration plate for acoustic instrument and pre paration therefor
ES422269A1 (en) Electronic tone generator
JPS5333029A (en) Cut-off frequency variable filter
ES260530A1 (en) Apparatus to make perceptible sounds to a patient by the skin (Machine-translation by Google Translate, not legally binding)
JPS52124324A (en) Speaker system
FR2394222A1 (en) Acoustic reproduction system with several loudspeakers - uses unique frequency band filtered from full spectrum signal to drive speaker units
JPS5332701A (en) Stereophonic sound regenerating apparatus
JPS5244144A (en) Amplifier
JPS53112701A (en) Booming remover
JPS5326171A (en) Handy watch
JPS522308A (en) Tone ringer circuit
JPS542715A (en) Speaker cone and production of the same
JPS5256519A (en) Electroacoustic transducer
JPS52128044A (en) High frequency noise elimination
JPS5330849A (en) Tone control circuit
JPS51134055A (en) Sound-effect amplifier
JPS51123138A (en) Electric sound converter
GB1352682A (en) Device providing treatments for stammering
ES402034A1 (en) Apparatus to accelerate language learning. (Machine-translation by Google Translate, not legally binding)
JPS52112302A (en) 4-channel head phone unit

Legal Events

Date Code Title Description
ST Notification of lapse