CN101242595A - How to adjust the phone volume - Google Patents

Abstract

A method for adjusting the volume of a mobile phone, comprising steps: the mobile phone detects the noise level of the mobile phone of the local machine or the other party; if the mobile phone of the local machine or the other party is in a quiet environment, appropriately lower the volume; if the mobile phone of the local machine or the other party is in a noisy environment , turn up the volume appropriately. By adopting the invention, the mobile phone will have the function of intelligently adjusting the volume of the earpiece of the machine and the volume of the voice sent to the other party, so that the mobile phone can adapt to different environmental noises.

Description

How to adjust the phone volume

technical field

The invention relates to communication, in particular to a method for intelligently adjusting the volume of a mobile phone.

Background technique

With the popularization of mobile phones, the occasions where mobile phones are used are becoming more and more widespread, which makes the environmental noise of mobile phone users vary greatly, and they will be used in some noisy environments, such as bars, railway stations and other places. It is possible that the receiver cannot hear the sound of the phone clearly, and it will also be used in some quiet environments, such as libraries, etc., which requires that the sound of the mobile phone speaker should not be too loud, so as not to affect others.

For the problem of automatically adjusting the volume of mobile phones, the existing solutions mainly focus on the solution on the network side, that is, to detect the noise at the receiving end through the network, and then automatically adjust the volume sent to the receiving end according to the noise level, so that the volume at the receiving end can be within a Reasonable range.

There are also some solutions for mobile phones, but due to the insensitivity of noise detection, this function cannot achieve the expected purpose. And, the method on the existing mobile phone can only change the volume of this machine, can not control the volume of the other party.

Because if it is solved on the network side, it faces many problems. First, when the mobile phone encodes the voice signal, some algorithms have already performed noise compression, which makes it difficult for the network side to accurately determine the noise level at the receiving end. The second is that there is an echo cancellation device on the network side. If intelligent volume control is used on the network side, it must be considered that the echo signal cannot be amplified.

However, some existing solutions on the mobile phone side cannot accurately detect the energy of the noise, and cannot accurately distinguish the noise from the voice, so that the volume of the earpiece at the receiving end cannot be properly adjusted. And the existing mobile phone solution is to adjust the volume of the machine according to the noise for the environment where the machine is located, but for the situation where the other party is in a noisy environment, this method is powerless.

Contents of the invention

The invention provides a method for adjusting the volume of the receiving end according to the accurate detection of the background noise level of the local machine, and adjusting the volume sent to the other party according to the noise level of the other party.

In order to achieve the above object, a method for adjusting the volume of a mobile phone comprises steps:

a) The mobile phone detects the noise level of the mobile phone or the other party's mobile phone;

b) If the machine or the other party's mobile phone is in a quiet environment, lower the volume appropriately;

c) If the machine or the other party's mobile phone is in a noisy environment, turn up the volume appropriately.

By adopting the invention, the mobile phone will have the function of intelligently adjusting the volume of the earpiece of the machine and the volume of the voice sent to the other party, so that the mobile phone can adapt to different environmental noises.

Description of drawings

Fig. 1 is a block diagram of the present invention, reflecting each module of the present invention;

Fig. 2 is a core module of the present invention, the detailed block diagram of high-precision background noise detection;

Fig. 3 is the flow chart that mobile phone of the present invention automatically adjusts the volume output to the handset according to the ambient noise level of the machine;

Fig. 4 is a flowchart of the mobile phone of the present invention automatically adjusting the volume sent to the other party according to the environmental noise level of the other party.

Detailed ways

The composition of the present invention will be explained below with reference to FIG. 1 . First, according to the present invention, the mobile phone can detect the noise level 130 of the environment where the machine is located according to the sound collected from the microphone, and then adjust the preset volume 120 according to the noise level of the environment where the machine is located, and then according to the obtained The volume will output the decoded signal to the handset of the phone.

Secondly, the mobile phone can also perform noise detection 130 according to the voice signal decoded by the channel and source decoder 110, adjust the volume 150 of the sound collected from the microphone according to the detected noise level of the other party, and then perform the source and channel encoding 140.

An embodiment of the present invention is described below with reference to FIG. 1 .

The invention provides a novel method for automatically adjusting the volume of a mobile phone. When the user of the mobile phone is in different environmental noises, the mobile phone can automatically adjust the volume of the earpiece. If the user is in a quiet environment, the speaker of the mobile phone will use a lower The volume outputs the voice, so that the listener will not affect the people around. If the user is in a noisy environment, the speaker of the mobile phone will output the voice at a higher volume, so that the receiver can hear the voice clearly without manually adjusting the volume.

According to another aspect of the present invention, the mobile phone can detect the background noise level in the decoded voice signal, and obtain the environmental noise of the other party accordingly, then adjust the volume collected by the microphone of the mobile phone according to the detected noise, and then perform The codec is sent to the other party.

The specific steps are,

When the call is established, the mobile phone starts to detect the background noise level 130 in the voice collected by the microphone,

Then adjust the pre-set volume to 120 according to the ambient noise level of the machine. If the mobile phone is found in a quiet environment, turn down the volume appropriately. If the mobile phone is found in a noisy environment, turn up the volume appropriately.

Then output the decoded signal to the earpiece of the mobile phone according to the obtained volume value.

At the same time, after the call is established, the mobile phone can also perform noise detection 130 according to the voice signal decoded by the channel and source decoder 110, so as to obtain the noise level of the other party and adjust the volume of the sound collected from the microphone. 150. If you find that the other party is in a quiet environment, turn down the volume appropriately, and if you find that the other party is in a noisy environment, turn up the volume appropriately.

Encoding 140 of the source and channel is then performed.

Fig. 2 is a key method of the present invention, a detailed block diagram of a high-precision background noise detection method.

When the signal is input to this module, it is first transformed into the frequency domain through high-resolution transformation 210;

Then, in the frequency domain, it is judged whether the input signal is speech or noise 220;

Then the frequency spectrum of the signal is divided into different frequency segments, and the frequency-domain noise energy 230 of each segment is accumulated;

Finally output the detected noise energy.

Fig. 3 is a flow chart of the present invention to adjust the volume output to the microphone according to the ambient noise of the environment where the machine is located.

As shown in the figure, the user first sets the volume of the mobile phone 310, if the call is not established 320, then continue to wait;

If the conversation is established 320, then detect the background noise level 330 of the signal collected from the microphone in real time;

According to the obtained background noise energy level, adjust the output volume of the mobile phone earpiece 340;

The earpiece of the mobile phone outputs the volume at 350 with the current output volume value, and when the call ends at 360, it returns to 320 to continue waiting.

Fig. 4 is another aspect of the present invention, a flow chart of adjusting the volume of the voice to be sent by the machine according to the environmental noise level of the other party.

As shown in the figure, first determine whether to establish a call 410, if not, continue to wait;

If the conversation is established, read the voice signal 420 decoded by the source channel decoder of the machine;

Real-time detection of the background noise level 430 of the decoded speech signal;

According to the obtained background noise energy level, adjust the volume 440 collected by the mobile phone from the microphone;

Output the adjusted speech signal to the source channel encoder 450;

When the call ends 460, then return to 410 to continue waiting.

Claims (6)

1. A method for adjusting the volume of a mobile phone, comprising the steps of: a) The mobile phone detects the noise level of the mobile phone or the other party's mobile phone; b) If the machine or the other party's mobile phone is in a quiet environment, lower the volume appropriately; c) If the machine or the other party's mobile phone is in a noisy environment, turn up the volume appropriately. 2. The method according to claim 1, characterized in that the mobile phone detection of the machine comprises the steps: Detect the level of background noise in the sound picked up by the microphone; Adjust the volume according to the ambient noise level in which the unit is located. 3. The method according to claim 2, wherein detecting the background noise level in the sound collected by the microphone comprises: When the signal is input, it is transformed to the frequency domain by high resolution; Determine whether the input signal is speech or noise; The spectrum of the signal is divided into different frequency segments, and the frequency-domain noise energy of each segment is accumulated. 4. The method according to claim 1, wherein said mobile phone detecting the other party's mobile phone comprises the steps of: Read the voice signal decoded by the source channel decoder of this machine; Implement detection of the background noise level of the decoded speech signal; Adjust the volume collected by the machine from the microphone according to the obtained background noise energy level; Output the adjusted speech signal to the source channel encoder. 5. method according to claim 4, it is characterized in that described implementation detects the background noise level of decoding speech signal and comprises steps: When the signal is input, it is transformed to the frequency domain by high resolution; Determine whether the input signal is speech or noise; The spectrum of the signal is divided into different frequency segments, and the frequency-domain noise energy of each segment is accumulated. 6. The method according to claim 1, 2 or 4, characterized in that the volume is preset.

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