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21. 发明专利

JPS58646A HOLDER FOR CYLINDRICAL OR TUBULAR BODY SENSITIVE TO VIBRATION 失效
公开(公告)号：JPS58646A
公开(公告)日：1983-01-05
申请号：JP9324582
申请日：1982-06-02
申请人： AKG AKUSTISCHE KINO GERAETE
发明人： KAARU TSUEHI
IPC分类号： H04R1/02 , F16F1/46 , F16F15/04 , F16F15/08 , H04R1/08

24. 发明专利

JPS54148501A Device for reproducing at least 2 channels acoustic events transmitted in room 失效
标题翻译：至少2个频道重现的设备在房间中传输的声音事件
公开(公告)号：JPS54148501A
公开(公告)日：1979-11-20
申请号：JP2023779
申请日：1979-02-24
申请人： Akg Akustische Kino Geraete
发明人： DOKUTORU RUUDORUFU GERIKE
IPC分类号： H04R1/34 , H04R5/02
CPC分类号： H04R1/345 , H04R5/02 , H04R2205/022

27. 发明专利

JPH09205345A METHOD AND DEVICE FOR FILTERING AUDIO SIGNAL 失效
公开(公告)号：JPH09205345A
公开(公告)日：1997-08-05
申请号：JP32511096
申请日：1996-12-05
申请人： AKG AKUSTISCHE KINO GERAETE
发明人： MARUTEIN OPITSUTSU
IPC分类号： H04S1/00 , G06F17/10 , H03H17/00 , H03H17/02 , H04S5/02
摘要： PROBLEM TO BE SOLVED: To decrease frequent arithmetic processing by using impulse response made timewise rough for convolution and using the impulse response without modification in other cases. SOLUTION: In response to digital processing by a prescribed sampling frequency, in the case of a step in a comparatively short duration time, after each delay element 5, an audio signal s(t) is multiplied with a sample value h1 corresponding to the impulse response. Furthermore, in the region where the impulse response is processed in a step continued longer over a comparatively long period, the signal is subjected to clock control successively without other processing over a corresponding number of delay elements 5. Then after a sampled value reaching an adder 6 newly is inverted at a stage 7 and subtracted from the original sum stored in a memory 8. The result obtained in this way is multiplied with a sample value h'1 of the impulse response.

29. 发明专利

JPH02165800A STEREOPHONIC BINAURAL 失效
公开(公告)号：JPH02165800A
公开(公告)日：1990-06-26
申请号：JP27511489
申请日：1989-10-24
申请人： AKG AKUSTISCHE KINO GERAETE
发明人： BUERUNAA FUIDEI
IPC分类号： H04S1/00
摘要： PURPOSE: To obtain a hearing sense faithful to an original sound image by weighting a left (right) stereophonic signal supplied to a right (left) ear by an outer ear transmission function allocated to a right (left) ear in an angular area of 0 deg. to 45 deg. on the left (right) side of a medium face so as to timewisely delay the signal up to 700μs at maximum. CONSTITUTION: An audio signal of a left stereophonic signal L is weighted by the outer ear transmission function allocated to the left ear in the left angular area 0 deg. to 45 deg. of the medium face 7 and the weighted signal is supplied to the left ear. The same audio signal is transmitted to the right ear through two timewisely delayed branches. One branch has a time delay τ2 up to 700μs at maximum and the delayed signal is weighted by an outer transmission function allocated to the right ear in the left angular area 0 deg. to 45 deg. of the medium face 7. Consequently a hearing sense faithful to a hearing original sound image is obtained on a listening place.

30. 发明专利

JPH01311700A HOLDER FOR MICROPHONE SUPPORTER 失效
公开(公告)号：JPH01311700A
公开(公告)日：1989-12-15
申请号：JP8988789
申请日：1989-04-11
申请人： AKG AKUSTISCHE KINO GERAETE
发明人： BUERUNAA FUIDEI
IPC分类号： F16M11/20 , H04R1/00 , H04R1/08
摘要： PURPOSE: To enable an effective solid-state propagation tone cutoff by making a mass of a holding device several times, in comparison with a mass composed of a microphone and a microphone supporter. CONSTITUTION: The terminal part of a supporting tube 2 on the opposite side of a microphone 1 is coupled with a holding device 4 by the thread of a screw 3, the holding device 4 is composed of metal having high specific gravity such as iron, brass, lead or any similar material, for example, and the mass of the holding device 4 is increased more than several times, in comparison with the mass adding a microphone 1 and the supporting pipe 2. As a result, the number of resonant vibrations on such an overall system, including the mass of the microphone is sufficiently deeply positioned under the characteristic resonance of a transformer. Thus, impulse exerted from the outside to a spring-elastically fixed vibratable system does not give any adverse effects upon the microphone.

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