IT1250040B - Portable apparatus for listening to sounds - Google Patents

Portable apparatus for listening to sounds

Info

Publication number
IT1250040B
IT1250040B ITTO910838A ITTO910838A IT1250040B IT 1250040 B IT1250040 B IT 1250040B IT TO910838 A ITTO910838 A IT TO910838A IT TO910838 A ITTO910838 A IT TO910838A IT 1250040 B IT1250040 B IT 1250040B
Authority
IT
Italy
Prior art keywords
acoustic
sounds
listening
frequencies
resonating
Prior art date
Application number
ITTO910838A
Other languages
Italian (it)
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 filed Critical
Priority to ITTO910838A priority Critical patent/IT1250040B/en
Publication of ITTO910838A0 publication Critical patent/ITTO910838A0/en
Publication of ITTO910838A1 publication Critical patent/ITTO910838A1/en
Application granted granted Critical
Publication of IT1250040B publication Critical patent/IT1250040B/en

Links

Landscapes

  • Headphones And Earphones (AREA)

Abstract

The invention concerns a portable apparatus for listening to sounds with combined natural and electronic amplification. The technical problem is to realise a listening apparatus which is immediately portable and ready for use, low consumption with good sensitivity, amplification fidelity and audibility in the entire range of acoustic frequencies, including low frequencies, which are not audible to similar devices already in use. The apparatus according to the invention comprises two devices for detecting the sounds being listened to, which can be activated selectively, the first one 1 a membrane type, the second one 3 with directional and focusing effect, both of them having an acoustic box resonating at the lower acoustic frequencies and a microphone capsule which is connected to an electronic amplification unit 2; said unit 2a in turn is connected to an electrical- acoustic transducer 4 having a loudspeaker capsule inserted in an acoustic box resonating at low frequencies and connected to a headphone 5. <IMAGE>
ITTO910838A 1991-11-06 1991-11-06 Portable apparatus for listening to sounds IT1250040B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ITTO910838A IT1250040B (en) 1991-11-06 1991-11-06 Portable apparatus for listening to sounds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITTO910838A IT1250040B (en) 1991-11-06 1991-11-06 Portable apparatus for listening to sounds

Publications (3)

Publication Number Publication Date
ITTO910838A0 ITTO910838A0 (en) 1991-11-06
ITTO910838A1 ITTO910838A1 (en) 1993-05-06
IT1250040B true IT1250040B (en) 1995-03-30

Family

ID=11409689

Family Applications (1)

Application Number Title Priority Date Filing Date
ITTO910838A IT1250040B (en) 1991-11-06 1991-11-06 Portable apparatus for listening to sounds

Country Status (1)

Country Link
IT (1) IT1250040B (en)

Also Published As

Publication number Publication date
ITTO910838A0 (en) 1991-11-06
ITTO910838A1 (en) 1993-05-06

Similar Documents

Publication Publication Date Title
AU770469B2 (en) Head phone
WO2006026812A3 (en) Apparatus and method for sound enhancement
DE69840768D1 (en) HEARING DEVICE FOR OPEN HEARING
ES2115992T3 (en) DEVICE TO SUPPRESS SNORING.
WO2005044140A3 (en) Noise attenuating headset
TW376674B (en) Earphone
CA2034287A1 (en) Acoustic signal reproducing apparatus
ATE320160T1 (en) ßAUCUSTIC TRANSMISSION CONNECTION, HEADPHONES WITH ACOUSTIC TRANSMISSION CONNECTION AND USES OF THE ACOUSTIC TRANSMISSION CONNECTIONß
NO950495D0 (en) Apparatus for listening to body sounds
WO2001072084A3 (en) Dual mode audio device
WO2005043508A3 (en) A portable voice studio system and method
WO2001060530A8 (en) Apparatus having an electroacoustic transducer forming a sound reproducing means and a part of vibration generating means
IT1250040B (en) Portable apparatus for listening to sounds
EP0464220A4 (en) Earphone device
JP3554548B2 (en) A device that transmits subtle vibrations of sound to the skin
JPS62151000A (en) portable public address system
KR830002886B1 (en) Body phone
SE7909920L (en) FREQUENCY ADJUSTED SIGNAL DEVICE FOR HEARING DAMAGE
JPS59140796A (en) Acoustic reproducing device using face horn
JPH07250393A (en) Vibration giving device
CN2110969U (en) Deaf-aid set capable of distinguishing sound direction
JPH03214893A (en) Earphone device
JPS6315699U (en)
JPH0240699A (en) Four-dimensional headphones
FI961541L (en) Audio module connected to a mobile device

Legal Events

Date Code Title Description
0001 Granted