FR459339A - Speech enhancement device for phones - Google Patents

Speech enhancement device for phones

Info

Publication number
FR459339A
FR459339A FR459339DA FR459339A FR 459339 A FR459339 A FR 459339A FR 459339D A FR459339D A FR 459339DA FR 459339 A FR459339 A FR 459339A
Authority
FR
France
Prior art keywords
phones
enhancement device
speech enhancement
speech
enhancement
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
Other languages
French (fr)
Inventor
Henry Waymouth Prance
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR459339A publication Critical patent/FR459339A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/02—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators
    • G10K11/025—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators horns for impedance matching

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
FR459339D 1912-07-26 1913-06-14 Speech enhancement device for phones Expired FR459339A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB459339X 1912-07-26

Publications (1)

Publication Number Publication Date
FR459339A true FR459339A (en) 1913-11-03

Family

ID=1498840

Family Applications (1)

Application Number Title Priority Date Filing Date
FR459339D Expired FR459339A (en) 1912-07-26 1913-06-14 Speech enhancement device for phones

Country Status (1)

Country Link
FR (1) FR459339A (en)

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