TW200533158A - Noise cancellation apparatus and method, and electronic communication apparatus using the same - Google Patents

Abstract

Noise cancellation apparatus and method, and an electronic communication apparatus using the same are provided. The noise cancellation apparatus is for canceling a first background noise received by a microphone. The microphone also receives a first sound signal. The first background noise mixes with the first sound signal to be a mixed signal. The noise cancellation apparatus includes a vibration sensor, a converter and a computing device. The vibration sensor is for sensing a vibration signal caused by the first sound signal or the first background noise. The converter is for restoring the vibration signal to a restored signal. The computing device is for comparing the mixed signal with the restored signal to get the first sound signal.

Description

200533158 V. Description of the invention (1) 1. [Technical field to which the invention belongs] Method and use of noise cancellation The present invention relates to a kind of noise pis S '^ Φ / division device, which is an electronic communication device showing us. And 2. [Previous technology] One of the methods of using electronic communication in a noisy environment, such as the use of intercom, often because of background noise. 0σ is negative after k. Eliminating background noise is an improvement Mike; ΞΠΪ ;; Set: The method of eliminating noise is as follows. Add one, back; noise minus the auxiliary microphone to receive ::: J The sound signal received by the wind: It must be on the outside of the electronic communication device. 'However, this method is used, and it affects the communication device two:- A hole for the auxiliary microphone does not affect the appearance β Γ 蚬 Therefore, a method is needed to eliminate noise. [Abstract] In addition to the background of the device, a microphone sound signal to eliminate the sensor. The main purpose of the present invention is to use The noise canceling device is to provide a noise canceling ° wind collection, and the device includes an electronic communication device for sensing to eliminate the-background noise of the bismuth 4 4. = Elimination device ’for elimination The first-background noise is mixed into: the more collected-the first-sound one vibration residual test 5 |, one Μ”, and this joint signal. This noise _ converter and-calculator. Vibration

4API0331TW.ptd $ 6 pages can be sensed when the noise is canceled. The device can include a first mixed signal and a second subtractor to restore the signal, and when the noise is canceled, it can be used to detect the Including a third subtraction calculation to obtain a second audio signal. 200533158 V. Description of the invention (2) A vibration signal caused by the first sound signal or the first background noise. The converter is used for converting the vibration signal into a restoration signal. The calculator is used to calculate the mixed signal and restore the signal to obtain the first sound signal, and to eliminate the background noise. The noise reduction device of the present invention uses a vibration sensor without opening a hole in the housing of the electronic communication device, so it does not affect the appearance of the electronic communication device. Vibration signals caused by sound signals. Then the subtractor and a second subtractor are operated at this time. The first subtractor supplies the subtraction operation to the network to obtain a second background noise. The mixed signal is subtracted from the second background noise, and the c original signal is substantially consistent with the first sound signal.一 # ί The vibration sensor is set in a second position

Hall, miscellaneous paper caused by vibration signals. At this time, the operation I device ′ 4 will be a total of ′ ,, and

Acoustic 4 r μ combined signal is subtracted from the restored signal. #U ° The second sound signal is substantially the same as the first I. The present invention also provides a kind of noise and a first background noise in the set. The method is to remove a microphone and mix it with the first background noise to form a microphone to collect a first sound signal, and the following steps. Sensing the first sound two = Sihe signal. Noise reduction method includes a shock caused by stomach No. 4 or the first background noise

200533158

5. Description of the invention (3) Move m. Convert the vibration signal into a restoration signal. Calculate the mixed signal and ... the original signal to obtain the first sound signal, and the purpose of eliminating background noise is met by the noise reduction method of the present invention using a vibration sensor without opening a hole in the electrical +: device casing, Therefore, it does not affect the appearance of the electronic communication device. The vibration sensor is set at a vibration signal caused by a first signal. Then the front mixed signal is subtracted from the restored signal, and then the mixed signal is mixed with the second background noise. The restored signal is always top and first. The calculation steps include the following steps. Calculate to get the first sound signal. The sound signal matches. The measurement step is to use a vibration sensor to reach a position, and the first step of detecting the acoustic sound calculation step includes the following steps. Two different, to get a second background noise: the signal is subtracted to get the restored signal, the sound signal matches. The vibration sensor used is set to — vibration signal caused by scene noise. Then, the mixed signal is compared with the restored signal, and the second sound signal is substantially the same as the first. The present invention also provides an electronic communication including the noise canceling device as described above. The sensor need not affect the appearance of the electronic communication device in the electronic communication device. The device includes a casing, and the aforementioned noise canceling device adopts a vibration. An extra hole is opened in the casing, so it does not affect the fourth. [Embodiment]

4API0331TW.ptd Page 8 200533158 V. Description of the invention (4) Fig. 1 is a block diagram of the first embodiment of the noise canceling device 100 according to the present invention, which is combined with a microphone 102. The noise canceling device 100 is provided for canceling the microphone 102 and also collects one of the first background noises 104. The microphone 102 further collects a first sound signal 10 6 'and mixes it with the first background noise 104 to form a mixed signal 108. This embodiment 100 includes a vibration sensor 11 0, a converter 1 1 $, and an arithmetic unit 118. In this embodiment 100, the vibration sensor 1 10 is disposed at a first position, for example, closer to the microphone 102, and can sense the vibration signal 112 caused by the first sound signal 106. The converter 1 14 is electrically coupled with the vibration sensor 1 1 0 to convert the vibration signal 11 2 into a restored signal 116. The computing unit 118 is coupled to the microphone 102 and the converter 114 and is used for computing the mixed signal 108 and the restored signal 116 to obtain the first sound signal 106. In this embodiment 100, the arithmetic unit 118 includes a first subtractor 120 and a second subtractor 124. The first subtractor 120 is used for subtracting the mixed signal 108 from the restored signal 1 16 to obtain a second background noise 1 2 2. The second subtractor 1 2 4 is used for subtracting the mixed signal 108 from the second background noise 122 to obtain the restored signal 116. The restoration signal 116 substantially coincides with the first sound signal 106. Ideally, the restoration signal 116 is equal to the first sound signal 106. FIG. 2 is a block diagram of a combination of a noise cancellation device 200 and a microphone 102 according to a second embodiment of the present invention. The difference between this embodiment 200 and the first embodiment 100 is that the vibration sensor 2 10 of this embodiment 200 is disposed at a second position, for example, a distance from the microphone 102, and It can sense the vibration signal 212 caused by the first background noise 104. The converter 214 then converts the vibration signal 212 into a restoration signal 216. At this time, the arithmetic unit 218 includes a third subtractor 226 for

4API0331TW.ptd Page 9 200533158

Subtract the mixed signal 108 and the restored signal 216 to obtain a second sound == 228. The second sound signal 228 is substantially equal to the first sound signal 1⑽. In an ideal situation, the second sound signal 228 is equal to the first sound signal. FIG. 3 is a flowchart of a first embodiment of a noise eliminating method according to the present invention. This embodiment of the noise cancellation method is provided to eliminate one of the microphones. The microphone collects a first sound signal & and mixes it with the first back noise signal to form a mixed signal & + ratio. First, sensing the first audio message,

S! Vibration signal "(step 301), in this step, this real widely uses a vibration sensor and is located in a first position, for example, closer to the phase transition vibration of the wheat, the signal VS becomes-restore the signal S (Step 3 0 3). The present is closed. Fm restores the signal ms and performs a subtraction operation to obtain a second background noise ^ 1 1 (step 3 0 5). The mixed signal Si + Bi and the second [Back]] 2 6! '^ Salt operation' to get the restored signal s, and restored signal 3, which is essentially consistent with the signal \ 2, 2; ideally, the restored signal S is equal to the first-said signal Si (step 307). Zhuo

FIG. 4 is a flowchart of a second embodiment of a noise cancellation method according to the present invention. First, the second senses the vibration signal VB caused by the first background noise & (step 401) The embodiment uses a vibration sensor and is located in a second position, such as Xiao Li Xi Ke Feng. Converts the vibration signal VB Into a restored signal B, (step 40 1). Subtract the mixed signal S1 + Bl and the restored signal B to obtain a second sound signal s2 = si + Bi—B ,. The second sound signal \ act ^

Page 10 200533158 V. Description of the invention (6) When the first sound signal $ 1 matches the ideal situation, the second sound signal is equal to the first sound signal 31 (step 40 5). FIG. 5 is a schematic diagram of a first embodiment of the electronic communication device of the present invention. In this embodiment 500, the aforementioned first embodiment of the device is adopted as its noise cancellation device. The vibration sensor 5 10 is disposed near the microphone 502, and can sense the vibration signal caused by the first sound signal 106 shaking the casing 53 0. Since the noise canceling device in the embodiment 500 of the electronic communication device uses the vibration sensor 5 1 0 ′ without opening an additional hole in the casing 5 3 0, the appearance of the embodiment 5 0 0 is not affected. FIG. 6 is a schematic diagram of a second embodiment of the electronic communication device according to the present invention. In this embodiment 600, the aforementioned device second embodiment 200 is adopted as its noise canceling device. The vibration sensor 610 is disposed away from the microphone 502, and can sense a vibration signal caused by the first background noise 104 shaking the casing 530. Since the noise canceling device in Embodiment 6 of the electronic communication device 600 uses a vibration sensor 610 without opening an additional hole in the casing 530, the appearance of ^, 杳 丨 Θ00 is molded. The embodiments described above are not a limitation of the fourth embodiment of the present invention, and various changes and equality arrangements are within the scope of the present invention. Patent patent

IH 4API0331TW.ptd Page 11 200533158 Brief description of the diagram V. [Simplified description of the diagram] FIG. 1 is a block diagram of a noise reduction device according to the first embodiment of the present invention combined with a microphone, and FIG. Block diagram of the second embodiment of the device combined with a microphone; Fig. 3 is a flowchart of a first embodiment of a noise elimination method of the present invention; Fig. 4 is a flowchart of a second embodiment of a noise elimination method of the present invention; A schematic diagram of a first embodiment of a communication device; and FIG. 6 is a schematic diagram of a second embodiment of an electronic communication device of the present invention. Graphic component symbol description 1 0 0, 2 0 0 Noise cancellation device embodiment 102 106 110 110 11 4, 2 1 4 converter No. 5 0 2 microphone 1 0 4, Bi first background noise

Si first sound signal 1 08, Si mixed signal 210, 510, 610 Vibration sensor 112, 212, VS, VB Vibration signal 116, 216, S ', B' Restore signal 11 8, 2 1 8 Operator 1 2 0 The first subtractor 122, B2 the second background noise 124 the second subtractor 2 2 6 the third subtractor 2 2 8, S2 the second sound signal 5 0 0, 6 0 0 electronic communication device embodiment 5 3 0 housing

ίΐϋ! 4API0331TW.ptd Page 12

Claims (1)

200533158 VI. Application for Patent Scope Application Patent Scope 1. A noise canceling device for eliminating a microphone collected by a microphone. The microphone also collects a first sound signal, where the first two = ΓΐΓ: the first sound The signal is mixed into a mixed signal: noise-vibration sensor (vibrati ο nsens 〇r), for detecting a vibration signal caused by the first sound disorder or the first background noise; a converter, and The vibration sensor is coupled to convert the vibration signal into a restored signal; and an arithmetic unit is coupled to the microphone and the converter to calculate the mixed signal and the restored signal to obtain the first sound signal. Dagger 2 The noise cancellation device described in item 1 of the scope of the patent application, wherein the vibration sensor is disposed at a first position for sensing the vibration signal caused by the first sound signal. 3. The noise cancellation device as described in item 2 of the scope of patent application, wherein the arithmetic unit includes a first subtractor for subtracting the mixed signal from the restored signal to obtain a second background noise . U 4. The noise cancellation device as described in item 3 of the scope of the patent application, wherein the slander arithmetic unit further includes a second subtractor for subtracting the mixed signal from the second noise, to obtain The restored signal, the restored signal substantially matches the first sound signal. 4API0331TW.ptd Page 13 200533158 6. Scope of patent application 5. The noise cancellation device described in item 1 of the scope of patent application, wherein the vibration sensor is disposed at a second position for sensing the first background The vibration caused by noise " 5 tigers. 6. The noise cancellation device described in item 5 of the scope of patent application, wherein the arithmetic unit includes a 'third subtractor' for subtracting the mixed signal from the restored signal to obtain a second sound signal. , The second sound signal substantially matches the first sound signal. 7. The noise cancellation device described in item 1 of the scope of patent application, wherein the reduction signal is an audio signal. 8. A noise cancellation method for eliminating a microphone to collect a first background noise, the microphone further collects a first-a sound signal, wherein the first background noise and the first sound signal are mixed into a mixture Signal, the noise elimination method includes the following steps: sensing the first sound signal or a vibration signal caused by the first background noise; converting the vibration signal into a restoration signal; and calculating the mixed signal and the restoration signal to Get the first sound signal. 9. The noise elimination method described in item 8 of the scope of patent application, wherein the sense 4API0331TW.ptd Page 14 200533158 VI. Scope of patent application The test steps are included in a first-place daddy vibration signal. Measuring the first sound signal to cause the 10 · As described in item 9 of the scope of patent application, the calculation steps include: 'Mix the mixed signal with the background noise of the reduced signal. Everyone's “Noise Cancellation Method, where No. Subtracts Differences” to pay for this speed. 11 As described in No. 丨 0 of the scope of patent application, the “Noise Reduction Method” includes the operation steps. The mixed signal is subtracted from the second background noise to obtain the restored signal, and the restored signal is substantially consistent with the first sound signal. 1 2 · The noise elimination method described in item 8 of the scope of patent application , Wherein the sensing step further includes sensing the vibration signal caused by the first background noise at a second position. 1 3 · The noise elimination method as described in item No. 丨 2 of the patent application scope, wherein the operation step Contains: The subtraction operation between the soldier's signal and the reduction signal to obtain a second, said Λ 旒 σHAI the first sound signal is substantially consistent with the first sound signal 0 14 · An electronic communication device , Including: 200533158 VI. Patent application scope A microphone for collecting a first background noise and a first sound signal, wherein the first background noise and the first sound signal are mixed into a wave signal; a vibration A detector for sensing the first sound signal or a vibration signal caused by the first background noise; a converter coupled to the vibration sensor for converting the vibration signal into a restored signal; and an arithmetic unit, It is coupled with the microphone and the converter for calculating the full signal and the restored signal to obtain the first sound signal. 1 5 · The electronic communication device described in item 14 of the scope of patent application, further comprising a casing. Is coupled to the vibration sensor, wherein the vibration signal is generated when the first background noise or the first sound signal vibrates the case. 1 6 · The electronic communication device described in item 14 of the scope of patent application 'Where the vibration sensor is set at a first position for sensing the vibration signal caused by the first sound signal. 1 7 · The electronic communication device described in item 16 of the scope of patent application, in which the arithmetic unit is talked about Includes a first subtractor for subtracting the mixed signal from the reduced signal to obtain a second background noise. ~ Back 1 8 · Electronic communication as described in item 17 of the scope of patent application Device, The arithmetic unit further includes a second subtractor for the mixed signal and the first μ 4API〇331TW.ptd Page 16 200533158 VI. The scope of the patent application The scene noise is subtracted to obtain the restored signal. The restored signal is substantially consistent with the first sound signal. 19. The electronic communication device according to item 14 of the scope of patent application, wherein the vibration sensor is disposed at a second position for sensing the vibration signal caused by the first background noise. 20. The electronic communication device as described in item 19 of the scope of patent application, wherein the arithmetic unit includes a third subtractor for subtracting the mixed signal from the restored signal to obtain a second sound signal , The second sound signal substantially matches the first sound signal. 4API0331TW.ptd Page 17