WO2014169757A1 - 自适应调节频响的方法及终端 - Google Patents
自适应调节频响的方法及终端 Download PDFInfo
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- WO2014169757A1 WO2014169757A1 PCT/CN2014/074292 CN2014074292W WO2014169757A1 WO 2014169757 A1 WO2014169757 A1 WO 2014169757A1 CN 2014074292 W CN2014074292 W CN 2014074292W WO 2014169757 A1 WO2014169757 A1 WO 2014169757A1
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- loudness
- frequency response
- terminal
- response curve
- sound
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R29/00—Monitoring arrangements; Testing arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/24—Arrangements for testing
Definitions
- the present invention relates to the field of audio technologies, and in particular, to a method and terminal for adaptively adjusting frequency response. Background technique
- the frequency response that is, the frequency response, refers to the phenomenon that when a sound signal outputted by a constant voltage is connected to the system, the sound pressure generated by the system increases or decreases with frequency, and the phase changes with frequency.
- the program is solidified by the program after the frequency response adjustment is completed during the development and design process. In the mobile phone, the frequency response cannot be changed in different usage scenarios.
- the automatic frequency response adjustment technology in the prior art is originally derived from the audio field.
- the specific process of automatic frequency response adjustment is: using a micro control unit (MCU) to control the sound to emit a 20HZ ⁇ 20KHZ sweep signal, through the microphone (MIC, the MIC is used to achieve sound pickup), the sounds of the left, right, left surround, right surround, center and low speakers are picked up in turn, and the analysis of each box is analyzed. Frequency response curve, get the whole machine frequency response and the bass management configuration of each box.
- MCU micro control unit
- the technical problem to be solved by the present invention is to provide a method and a terminal for adaptively adjusting a frequency response, which can be applied to a call scene of a terminal.
- a first aspect of the present invention provides a method for adaptively adjusting a frequency response, comprising: when a terminal detects that an amplitude of a user voice is less than a first threshold, the sound pickup of the terminal performs sound pickup on the ambient sound, Obtaining a frequency response curve and loudness of the ambient sound; comparing a frequency response curve and loudness of the ambient sound with a frequency response curve and loudness of a preset internal path; and adjusting an internal path of the terminal according to the comparison result a frequency response curve and loudness within a predetermined frequency range such that a difference between a frequency response curve and loudness of the internal path of the terminal and a frequency response curve and loudness of the ambient sound is greater than a preset condition within the predetermined frequency range .
- the step of adjusting a frequency response curve and a loudness of the internal path of the terminal in a predetermined frequency range according to the comparison result including: if the predetermined frequency is In the range, the difference between the frequency response curve and the loudness of the internal path of the terminal and the frequency response curve and the loudness of the ambient sound is less than or equal to a preset condition, thereby increasing the frequency response of the internal channel of the terminal within a predetermined frequency range. a value corresponding to the ordinate of the curve and a loudness such that within the predetermined frequency range, a difference between a frequency response curve and loudness of the internal path of the terminal and a frequency response curve and loudness of the ambient sound is greater than a preset condition .
- the step of comparing a frequency response curve and loudness of the ambient sound and a frequency response curve and loudness of a preset internal path of the terminal including: using digital signal processing technology Comparing the frequency response curve and loudness of the ambient sound with the frequency response curve and loudness of the internal path preset by the terminal.
- the method includes: when the terminal detects that the amplitude of the user voice is less than the first threshold, the sound pickup of the terminal performs sound pickup on the ambient sound to obtain the frequency of the ambient sound.
- the method includes: when the terminal detects that the amplitude of the ambient sound is greater than the second threshold, automatically turning on the sound pickup of the terminal to perform sound pickup.
- the terminal when the terminal detects that the amplitude of the user voice is less than the first threshold, the terminal Before the sound pickup device performs sound pickup on the surrounding sound to obtain a frequency response curve and loudness of the surrounding sound, the method includes: if the terminal detects that the amplitude of the user sound is greater than or equal to the first threshold, the sending stops The surrounding sounds are instructed to pick up the sound to prevent the sound pickup from generating an echo when the sound is picked up by the surrounding sound.
- a second aspect of the present invention provides a terminal, where the terminal includes: a sound pickup module, a comparison module, and an adjustment module; and the sound pickup module is configured to: when the terminal detects that the amplitude of the user voice is less than the first threshold, the terminal The sound pickup picks up the ambient sound to obtain the ambient sound Frequency response curve and loudness, and transmitting the frequency response curve and loudness of the ambient sound to the comparison module; the comparison module is configured to receive a frequency response curve and loudness of the ambient sound sent by the sound pickup module Comparing a frequency response curve and loudness of the ambient sound and a frequency response curve and loudness of the internal path preset by the terminal, and transmitting the comparison result to the adjustment module; the adjustment module is configured to receive the comparison module Transmitting, according to the comparison result, adjusting a frequency response curve and loudness of the internal path of the terminal within a predetermined frequency range, so that a frequency response curve and loudness of the internal path of the terminal are within the predetermined frequency range The difference between the frequency response curve and the
- the adjusting module is specifically configured to: in a predetermined frequency range, a frequency response curve and a loudness of the internal path of the terminal and a frequency response curve of the ambient sound
- the difference between the loudness is less than or equal to the preset condition
- the numerical value and the loudness corresponding to the ordinate of the frequency response curve of the internal path of the terminal in the predetermined frequency range are increased, so that the terminal interior is within the predetermined frequency range
- the difference between the frequency response curve and loudness of the path and the frequency response curve and loudness of the ambient sound is greater than a preset condition.
- the comparing module is specifically configured to compare a frequency response curve and a loudness of the ambient sound and a frequency response curve and loudness of an internal path preset by the terminal by using a digital signal processing technology.
- the terminal further includes an opening module, where the opening module is configured to automatically start the sound of the terminal when the terminal detects that the amplitude of the ambient sound is greater than a second threshold
- the pickup performs the function of sound pickup.
- the terminal further includes a sending module, where the sending module is used in the terminal When it is detected that the amplitude of the user's voice is greater than or equal to the first threshold, an instruction to stop the sound pickup of the surrounding sound is transmitted to prevent the sound pickup from generating an echo when the sound is picked up by the surrounding sound.
- the sound pickup of the terminal of the present invention performs sound pickup on the sound of the environment, obtains the frequency response curve and loudness of the ambient sound; compares the frequency response curve and loudness of the ambient sound, and The frequency response curve and loudness of the internal path preset by the terminal; according to the comparison result, the frequency response curve and loudness of the internal path of the terminal are adjusted.
- the terminal talks, in many cases, the user's voice and the surrounding environment sound simultaneously, in this way, the present invention makes it within a predetermined frequency range, The difference between the frequency response curve and the loudness of the internal path of the terminal and the frequency response curve and the loudness of the ambient sound is greater than a preset condition. Therefore, the present invention can be applied to the call scene of the terminal, and the frequency response and the loudness are adjusted.
- FIG. 1 is a flow chart of an embodiment of a method for adaptively adjusting frequency response according to the present invention
- FIG. 2 is a flow chart of another embodiment of a method for adaptively adjusting frequency response according to the present invention.
- FIG. 3 is a schematic diagram of time domain information of ambient noise in a mobile phone call scenario of the method for adaptively adjusting frequency response according to the present invention
- FIG. 4 is a schematic diagram of frequency domain information of ambient noise in a mobile phone call scenario of the method for adaptively adjusting frequency response according to the present invention
- FIG. 5 is a schematic diagram of a frequency response curve of ambient noise in a mobile phone call scene by the method for adaptively adjusting frequency response according to the present invention
- FIG. 6 is a schematic diagram showing a superposition of a frequency response curve of an internal path of a mobile phone and an ambient noise in a mobile phone call scenario by the method for adaptively adjusting a frequency response according to the present invention
- FIG. 7 is a schematic diagram showing a superposition of a frequency response curve of an internal channel frequency response and an environmental noise of an improved mobile phone call scene in the mobile phone call scenario according to the method for adaptively adjusting the frequency response of the present invention
- FIG. 8 is a schematic structural diagram of an embodiment of a terminal of the present invention.
- FIG. 9 is a schematic structural view of another embodiment of a terminal of the present invention. detailed description
- FIG. 1 is a flowchart of an embodiment of a method for adaptively adjusting frequency response according to the present invention, including:
- Step S101 When the terminal detects that the amplitude of the user voice is less than the first threshold, the sound pickup of the terminal performs sound pickup on the ambient sound to obtain a frequency response curve and loudness of the ambient sound.
- the sound pickup is an acoustic-electric converter that can pick up sounds, including but not limited to various types of microphones.
- Frequency response ie frequency response
- the sound pressure generated by the box increases or decreases with frequency, and the phase changes with frequency.
- the relationship between the sound pressure and the phase and frequency (variation) is called the frequency response, and the unit is Decibel (Db).
- the frequency characteristics of the sound system are usually described by the frequency response curve.
- the ordinate of the frequency response curve indicates the power (in decibels), and the abscissa indicates the frequency (in Hertz).
- the scale of the abscissa is logarithmic. The ordinate is linear.
- Loudness refers to the strength of the sound, that is, the degree of sound and sound. According to the subjective judgment of the human ear on the sound, the sound can be arranged in a sequence from light to loud. The loudness depends mainly on the sound intensity and also on the frequency of the sound. .
- the user is closest to the sound pickup, and the ambient sound is far away from the sound pickup.
- the first threshold is the threshold for determining that the user does not speak. Therefore, when the terminal detects that the amplitude of the user's voice is less than the first threshold, the user does not speak. At this time, the sound pickup of the terminal performs sound pickup on the ambient sound, and the frequency response curve and loudness of the ambient sound can be obtained.
- Step S102 Comparing the frequency response curve and loudness of the ambient sound and the frequency response curve and loudness of the internal path preset by the terminal.
- the terminal presets the frequency response curve and loudness of the internal path, and extracts the frequency response curve and loudness of the internal path, and compares and compares the frequency response curve and loudness of the ambient sound to obtain a comparison result, for example: In the frequency response curve, the amplitude of the internal path sound and the amplitude of the ambient sound in different frequency ranges; in which frequency range, the amplitude of the internal path sound is greater than the amplitude of the ambient sound; in which frequency range, the internal The amplitude of the path sound is smaller than the amplitude of the ambient sound, etc.
- the loudness of the two the loudness of the internal path sound and the loudness of the ambient sound in different frequency ranges are analyzed.
- Step S103 Adjust, according to the comparison result, a frequency response curve and loudness of the internal path of the terminal within a predetermined frequency range, so that between the frequency response curve and the loudness of the internal path of the terminal and the frequency response curve and loudness of the ambient sound in the predetermined frequency range The difference is greater than the preset condition.
- the frequency response curve and loudness of the internal channel of the terminal are small in the predetermined frequency range and the frequency response curve and loudness of the ambient sound are small, it is not enough to distinguish the frequency response curve and loudness of the internal path.
- the frequency response curve and loudness of the ambient sound then adjust the frequency response curve and loudness of the internal passage of the terminal within a predetermined frequency range, so that the frequency response of the internal passage of the terminal within a predetermined frequency range The difference between the line and loudness and the frequency response curve and loudness of the ambient sound is greater than the preset condition.
- the sound pickup of the terminal of the present invention performs sound pickup on the sound of the environment, obtains the frequency response curve and loudness of the ambient sound; compares the frequency response curve and loudness of the ambient sound, and the internal passage preset by the terminal. Frequency response curve and loudness; According to the comparison result, adjust the frequency response curve and loudness of the internal channel of the terminal.
- the present invention makes the frequency response curve of the internal path of the terminal and the frequency response curve of the loudness and the ambient sound within a predetermined frequency range. The difference between the loudness and the loudness is greater than the preset condition. Therefore, the present invention can be applied to the call scene of the terminal, and the frequency response and the loudness are adjusted.
- FIG. 2 is a flowchart of another embodiment of a method for adaptively adjusting frequency response according to the present invention, including:
- Step S201 When the terminal detects that the amplitude of the ambient sound is greater than the second threshold, the sound pickup of the terminal is automatically turned on to perform sound pickup.
- the sound of the user and the sound of the surrounding environment are both present. If the amplitude of the ambient sound is within an acceptable range, the influence of the ambient sound on the user's call is acceptable. When the amplitude exceeds the acceptable range, that is, when it is greater than the second threshold, the ambient sound has a great unacceptable impact on the user's call. At this time, the sound pickup of the terminal can be automatically turned on for sound pickup.
- Step S202 If the terminal detects that the amplitude of the user's voice is greater than or equal to the first threshold, then the instruction to stop the sound pickup of the surrounding sound is sent to prevent the sound pickup from generating an echo when the sound is picked up by the surrounding sound.
- the terminal detects that the amplitude of the user's voice is greater than or equal to the first threshold, indicating that someone's voice is in the surrounding sound. If the sound pickup continues to perform sound pickup on the surrounding sound, an echo will be generated. At this time, the terminal can send an instruction to stop. Pick up the sound of the surrounding sound. When the terminal detects that the amplitude of the user's voice is less than the first threshold, the sound pickup performs sound pickup on the surrounding sound.
- step S201 and step S202 have no sequence, and may be operated simultaneously or separately.
- Step S203 When the terminal detects that the amplitude of the user voice is less than the first threshold, the sound pickup of the terminal performs sound pickup on the ambient sound to obtain a frequency response curve and loudness of the ambient sound.
- the user is closest to the sound pickup, and the ambient sound is far away from the sound pickup.
- the first threshold is a threshold for determining that the user does not speak. Therefore, when the terminal detects that the amplitude of the user's voice is less than the first threshold, the user does not speak. At this time, the sound pickup of the terminal performs sound pickup on the ambient sound, and the frequency response curve and loudness of the ambient sound can be obtained.
- Step S204 Compare the frequency response curve and loudness of the ambient sound and the frequency response curve and loudness of the internal path preset by the terminal.
- the terminal presets the frequency response curve and loudness of the internal path, and extracts the frequency response curve and loudness of the internal path, and compares and compares the frequency response curve and loudness of the ambient sound to obtain a comparison result, for example: In the frequency response curve, the amplitude of the internal path sound and the amplitude of the ambient sound in different frequency ranges; in which frequency range, the amplitude of the internal path sound is greater than the amplitude of the ambient sound; in which frequency range, the internal The amplitude of the path sound is smaller than the amplitude of the ambient sound, etc.
- the loudness of the two the loudness of the internal path sound and the loudness of the ambient sound in different frequency ranges are analyzed.
- the step S204 specifically includes: comparing the frequency response curve and the loudness of the ambient sound and the frequency response curve and loudness of the internal path preset by the terminal by using a digital signal processing technique.
- Digital signal processing techniques are techniques that digitally represent and process signals.
- the purpose of digital signal processing is to measure or filter real-world continuous analog signals. Therefore, it is necessary to convert the signal from the analog domain to the digital domain before performing digital signal processing, which is usually implemented by an analog to digital converter.
- the output of the digital signal processing is often also transformed into the analog domain, which is implemented by a digital-to-analog converter.
- Digital signal processing algorithms require the use of computers or specialized processing devices such as digital signal processors (DSPs) and application specific integrated circuits (ASICs).
- DSPs digital signal processors
- ASICs application specific integrated circuits
- Step S205 Adjust, according to the comparison result, a frequency response curve and loudness of the internal path of the terminal within a predetermined frequency range, so that between the frequency response curve and the loudness of the internal path of the terminal and the frequency response curve and loudness of the ambient sound in the predetermined frequency range The difference is greater than the preset condition.
- the frequency response curve and loudness of the internal channel of the terminal are small in the predetermined frequency range and the frequency response curve and loudness of the ambient sound are small, it is not enough to distinguish the frequency response curve and loudness of the internal path.
- the frequency response curve and loudness of the ambient sound then adjust the internal channel of the terminal at a predetermined frequency
- the frequency response curve and loudness within the rate range are such that the difference between the frequency response curve and loudness of the internal path of the terminal and the frequency response curve and loudness of the ambient sound is greater than a preset condition within a predetermined frequency range.
- Step S205 specifically includes: if the difference between the frequency response curve and the loudness of the internal path of the terminal and the frequency response curve and the loudness of the ambient sound is less than or equal to a preset condition within a predetermined frequency range, the internal channel of the terminal is improved at a predetermined time.
- the numerical value and the loudness corresponding to the ordinate of the frequency response curve in the frequency range, so that the difference between the frequency response curve and the loudness of the internal passage of the terminal and the frequency response curve and the loudness of the ambient sound is greater than the preset in the predetermined frequency range condition.
- the predetermined frequency range of the mobile phone receiver is 300-4000 Hz
- the preset condition can be set within the range of 300-4000 Hz
- the difference between the frequency response curve and the ordinate of the frequency response curve of the ambient sound is XdB. If the difference between the frequency response curve of the internal passage of the mobile phone and the ordinate of the frequency response curve of the ambient sound is less than XdB, then the mobile phone is improved.
- the value of the ordinate of the frequency response curve of the internal path makes the difference between the frequency response curve of the internal passage of the mobile phone and the ordinate of the frequency response curve of the ambient sound greater than XdB, where the value of X needs to be determined experimentally or according to the actual situation.
- the situation is determined, when the general X is 6dB, the human ear can clearly perceive the difference.
- the terminal uses a mobile phone as an example, and the sound pickup uses Mike as an example.
- the ambient sound is exemplified by noisy ambient noise.
- the invention is very suitable for a call scene of a mobile phone when noise is noisy. It is assumed that when the mobile phone user walks around a work site, the cutting machine works very loudly. At this time, the user receives an incoming call. If the call is answered in such a scenario, it is largely Unable to hear clearly, the environmental noise time domain and frequency domain information are shown in Figure 3 and Figure 4, respectively. At this time, from the obtained frequency noise curve of the environmental noise, it can be found that the ambient noise has a large sound pressure level in the high frequency part. (Series 2), as shown in Figure 5, at this time, read the internal channel frequency response curve and loudness setting of the handset, and superimpose the ambient noise (system ⁇ 2 2 ) and the internal channel (Series 1) frequency response curve.
- the internal path of the handset receiver Frequency response and loudness processing need to be improved in the corresponding frequency portion below the ambient noise frequency response, so as to ensure that the sound of the internal channel in all frequency bands of the receiver (for example, 300-4000HZ) is not suppressed by background noise. Achieve the purpose of improving the call.
- the sound pickup of the terminal of the present invention performs sound pickup on the sound of the environment, obtains the frequency response curve and loudness of the ambient sound, compares the frequency response curve and loudness of the ambient sound, and the frequency response curve and loudness of the internal passage preset by the terminal; According to the comparison result, the frequency response curve and loudness of the internal passage of the terminal are adjusted.
- the terminal talks, in the case of many cases, the user's voice and the surrounding environment sound simultaneously.
- the present invention makes the frequency response curve and the loudness of the internal passage of the terminal and the frequency of the ambient sound within a predetermined frequency range.
- the difference between the loudness curve and the loudness is greater than the preset condition. Therefore, the present invention can be applied to the call scene of the terminal, and the frequency response and the loudness are adjusted.
- FIG. 8 and FIG. 9 are schematic structural diagrams of two embodiments of the terminal of the present invention.
- the terminal includes: a sound pickup module 101, a comparison module 102, and an adjustment module 103.
- the sound pickup module 101 is configured to: when the terminal detects that the amplitude of the user sound is less than the first threshold, the sound pickup of the terminal performs sound pickup on the ambient sound, obtains a frequency response curve and loudness of the ambient sound, and generates a frequency response of the ambient sound. The curves and loudness are sent to the comparison module 102.
- the user is closest to the sound pickup, and the ambient sound is far away from the sound pickup.
- the first threshold is the threshold for determining that the user does not speak. Therefore, when the terminal detects that the amplitude of the user's voice is less than the first threshold, the user does not speak. At this time, the sound pickup of the terminal performs sound pickup on the ambient sound, and the frequency response curve and loudness of the ambient sound can be obtained.
- the comparison module 102 is configured to receive a frequency response curve and loudness of the ambient sound sent by the sound pickup module 101, compare a frequency response curve and loudness of the ambient sound, and a frequency response curve and loudness of the internal path preset by the terminal, and adjust the comparison result.
- Module 103 sends.
- the terminal presets the frequency response curve and loudness of the internal path, and extracts the frequency response curve and loudness of the internal path, and compares and compares the frequency response curve and loudness of the ambient sound to obtain a comparison result, for example: In the frequency response curve, the amplitude of the internal path sound and the amplitude of the ambient sound in different frequency ranges; in which frequency range, the amplitude of the internal path sound is greater than the amplitude of the ambient sound; in which frequency range, the internal The amplitude of the path sound is smaller than the amplitude of the ambient sound, etc.; when comparing the loudness of the two, the loudness of the internal path sound is analyzed in different frequency ranges. The magnitude of the loudness of the ambient sound, etc.
- the comparison module 102 is specifically configured to compare the frequency response curve and loudness of the ambient sound and the frequency response curve and loudness of the internal path preset by the terminal by using a digital signal processing technique.
- Digital signal processing techniques are techniques that digitally represent and process signals.
- the purpose of digital signal processing is to measure or filter real-world continuous analog signals. Therefore, it is necessary to convert the signal from the analog domain to the digital domain before performing digital signal processing, which is usually implemented by an analog to digital converter.
- the output of the digital signal processing is often also transformed into the analog domain, which is implemented by a digital-to-analog converter.
- Digital signal processing algorithms require the use of computers or specialized processing devices such as digital signal processors (DSPs) and application specific integrated circuits (ASICs).
- DSPs digital signal processors
- ASICs application specific integrated circuits
- the adjusting module 103 is configured to receive the comparison result sent by the comparison module 102, and according to the comparison result, adjust a frequency response curve and loudness of the internal channel of the terminal within a predetermined frequency range, so that the frequency response curve and the loudness of the internal path of the terminal within a predetermined frequency range The difference between the frequency response curve and the loudness of the ambient sound is greater than the preset condition.
- the frequency response curve and loudness of the internal channel of the terminal are small in the predetermined frequency range and the frequency response curve and loudness of the ambient sound are small, it is not enough to distinguish the frequency response curve and loudness of the internal path.
- the frequency response curve and loudness of the ambient sound then adjust the frequency response curve and loudness of the internal channel of the terminal within a predetermined frequency range, so that the frequency response curve of the internal path of the terminal and the frequency response curve of the loudness and the ambient sound within a predetermined frequency range The difference between loudness is greater than the preset condition.
- the adjusting module 103 is specifically configured to improve the internal channel of the terminal in a predetermined frequency range when the frequency response curve and the loudness of the internal path of the terminal and the frequency response curve and the loudness of the ambient sound are less than or equal to a preset condition within a predetermined frequency range.
- the numerical value and loudness corresponding to the ordinate of the internal frequency response curve are such that the difference between the frequency response curve and the loudness of the internal path of the terminal and the frequency response curve and loudness of the ambient sound is greater than a preset condition within a predetermined frequency range.
- the terminal further includes an opening module 104.
- the opening module 104 is configured to automatically turn on the sound pickup function of the terminal to perform sound pickup when the terminal detects that the amplitude of the ambient sound is greater than the second threshold.
- the terminal further includes a sending module 105, and the sending module 105 is configured to detect at the terminal.
- the sending module 105 is configured to detect at the terminal.
- an instruction to stop the sound pickup of the surrounding sound is transmitted to prevent the sound pickup from generating an echo when the sound is picked up by the surrounding sound.
- the sound pickup of the terminal of the present invention performs sound pickup on the sound of the environment, obtains the frequency response curve and loudness of the ambient sound, compares the frequency response curve and loudness of the ambient sound, and the frequency response curve and loudness of the internal passage preset by the terminal; According to the comparison result, the frequency response curve and loudness of the internal passage of the terminal are adjusted.
- the terminal talks, in the case of many cases, the user's voice and the surrounding environment sound simultaneously.
- the present invention makes the frequency response curve and the loudness of the internal passage of the terminal and the frequency of the ambient sound within a predetermined frequency range.
- the difference between the loudness curve and the loudness is greater than the preset condition. Therefore, the present invention can be applied to the call scene of the terminal, and the frequency response and the loudness are adjusted.
- the present invention also provides an apparatus for adaptively adjusting frequency response, the apparatus comprising a processor and a memory coupled to the processor.
- the processor is configured to: when the terminal detects that the amplitude of the user voice is less than the first threshold, issue an instruction to request the sound pickup of the terminal to perform sound pickup on the ambient sound, obtain a frequency response curve and loudness of the ambient sound; and compare the a frequency response curve and loudness of the ambient sound and a frequency response curve and loudness of the internal path preset by the terminal; adjusting a frequency response curve and loudness of the internal path of the terminal within a predetermined frequency range according to the comparison result, so that Within a predetermined frequency range, a difference between a frequency response curve and loudness of the internal path of the terminal and a frequency response curve and loudness of the ambient sound is greater than a preset condition.
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Abstract
本发明公开了一种自适应调节频响的方法及终端，该方法包括：终端的声音拾取器对环境的声音进行声音拾取，获得环境声音的频响曲线和响度；比较环境声音的频响曲线和响度以及终端预设的内部通路的频响曲线和响度；根据比较结果，调整终端内部通路的频响曲线和响度，使得在预定频率范围内，终端内部通路的频响曲线和响度与环境声音的频响曲线和响度之间的区别大于预设条件。通过上述方式，本发明能够应用于终端的通话场景，且对频响和响度都进行调整。
Description
自适应调节频响的方法及终端
本申请要求于 2013 年 4 月 18 日提交中国专利局、 申请号为 201310135960.4, 发明名称为 "自适应调节频响的方法及终端"的中国专利申 请的优先权， 其全部内容通过引用包含于本申请中。 技术领域
本发明涉及音响技术领域，特别是涉及一种自适应调节频响的方法及终端。 背景技术
随着音频技术的发展， 手机的音频测试越来越多， 其中， 通话频响的测试 项最早来源于第三代合作伙伴计划（ 3GPP )、第三代合作伙伴计划 2 ( 3GPP2 ) 及国际电信同盟（ITU )协议中的具体要求， 在这些协议中对于频响测试项都 有完整的要求。 频响即频率响应， 是指将一个以恒电压输出的音频信号与系统 相连接时， 系统产生的声压随频率的变化而发生增大或衰减、相位随频率而发 生变化的现象。通常情况下， 在开发设计过程中频响调整完成后通过程序固化 在手机中， 在不同的使用场景中频响是无法变化的。
现有技术中的自动频响调整技术最早来源于音响领域， 在音视频接收器 ( AVR )解码器系统中，自动频响调整的具体过程是：利用微控制单元（MCU ) 控制音响发出一个 20HZ~20KHZ的扫频信号， 通过麦克（MIC， 该 MIC用来 实现声音的拾取）依次对左、 右、 左环绕、 右环绕、 中置及低音箱体发出的声 音进行拾取， 分析各箱体的频响曲线， 获得整机频响及各箱体低音管理配置。
然而， 上述自动频响调整技术只能应用于 AVR的低音管理场景， 不能应 用于手机的通话场景。 发明内容
本发明主要解决的技术问题是提供一种自适应调节频响的方法及终端，能 够应用于终端的通话场景。
本发明的第一方面提供一种自适应调节频响的方法， 包括： 在终端检测到 用户声音的振幅小于第一阔值时，终端的声音拾取器对环境声音进行声音拾取，
获得所述环境声音的频响曲线和响度；比较所述环境声音的频响曲线和响度以 及终端预设的内部通路的频响曲线和响度； 根据所述比较结果， 调整所述终端 内部通路在预定频率范围内的频响曲线和响度， 使得在所述预定频率范围内， 所述终端内部通路的频响曲线和响度与所述环境声音的频响曲线和响度之间 的区别大于预设条件。
在第一方面的第一种可能的实现方式中， 所述根据所述比较结果， 调整所 述终端内部通路在预定频率范围内的频响曲线和响度的步骤， 包括： 若在所述 预定频率范围内，所述终端内部通路的频响曲线和响度与所述环境声音的频响 曲线和响度之间的区别小于或等于预设条件，则提高所述终端内部通路在预定 频率范围内频响曲线的纵坐标所对应的数值和响度，使得在所述预定频率范围 内，所述终端内部通路的频响曲线和响度与所述环境声音的频响曲线和响度之 间的区别大于预设条件。
在第一方面的第二种可能的实现方式中，所述比较所述环境声音的频响曲 线和响度以及终端预设的内部通路的频响曲线和响度的步骤， 包括： 利用数字 信号处理技术比较所述环境声音的频响曲线和响度以及终端预设的内部通路 的频响曲线和响度。
在第一方面的第三种可能的实现方式中，所述在终端检测到用户声音的振 幅小于第一阔值时， 终端的声音拾取器对环境声音进行声音拾取， 获得所述环 境声音的频响曲线和响度的步骤之前， 包括： 在终端检测到环境声音的振幅大 于第二阔值时， 自动开启所述终端的声音拾取器进行声音拾取的功能。
结合第一方面的第一至第三任一种可能的实现方式，在第一方面的第四种 可能的实现方式中， 所述在终端检测到用户声音的振幅小于第一阔值时， 终端 的声音拾取器对周围的声音进行声音拾取，获得所述周围声音的频响曲线和响 度的步骤之前， 包括： 若所述终端检测到用户声音的振幅大于等于第一阔值， 则发送停止对周围的声音进行声音拾取的指令，以防止声音拾取器对周围的声 音进行声音拾取时产生回声。
本发明的第二方面是提供一种终端， 所述终端包括： 声音拾取模块、 比较 模块以及调整模块；所述声音拾取模块用于在终端检测到用户声音的振幅小于 第一阔值时， 终端的声音拾取器对环境声音进行声音拾取，获得所述环境声音
的频响曲线和响度，并将所述环境声音的频响曲线和响度向所述比较模块发送; 所述比较模块用于接收所述声音拾取模块发送的所述环境声音的频响曲线和 响度，比较所述环境声音的频响曲线和响度以及终端预设的内部通路的频响曲 线和响度， 并将所述比较结果向所述调整模块发送； 所述调整模块用于接收所 述比较模块发送的比较结果，根据所述比较结果， 调整所述终端内部通路在预 定频率范围内的频响曲线和响度，使得在所述预定频率范围内， 所述终端内部 通路的频响曲线和响度与所述环境声音的频响曲线和响度之间的区别大于预 设条件。
在第二方面的第一种可能的实现方式中，所述调整模块具体用于在所述预 定频率范围内，所述终端内部通路的频响曲线和响度与所述环境声音的频响曲 线和响度之间的区别小于或等于预设条件时，提高所述终端内部通路在预定频 率范围内频响曲线的纵坐标所对应的数值和响度，使得在所述预定频率范围内， 所述终端内部通路的频响曲线和响度与所述环境声音的频响曲线和响度之间 的区别大于预设条件。
在第二方面的第二种可能的实现方式中，所述比较模块具体用于利用数字 信号处理技术比较所述环境声音的频响曲线和响度以及终端预设的内部通路 的频响曲线和响度。
在第二方面的第三种可能的实现方式中， 所述终端还包括开启模块， 所述 开启模块用于在终端检测到环境声音的振幅大于第二阔值时， 自动开启所述终 端的声音拾取器进行声音拾取的功能。
结合第二方面的第一至第三任一种可能的实现方式，在第二方面的第四种 可能的实现方式中， 所述终端还包括发送模块， 所述发送模块用于在所述终端 检测到用户声音的振幅大于等于第一阔值时，发送停止对周围的声音进行声音 拾取的指令， 以防止声音拾取器对周围的声音进行声音拾取时产生回声。
本发明的有益效果是： 区别于现有技术的情况，本发明终端的声音拾取器 对环境的声音进行声音拾取， 获得环境声音的频响曲线和响度； 比较环境声音 的频响曲线和响度以及终端预设的内部通路的频响曲线和响度；根据比较结果， 调整终端内部通路的频响曲线和响度。 终端通话时， 在很多情况下， 用户的声 音和周围环境的声音同时存在，通过这种方式，本发明使得在预定频率范围内，
终端内部通路的频响曲线和响度与环境声音的频响曲线和响度之间的区别大 于预设条件， 因此， 本发明能够应用于终端的通话场景， 且对频响和响度都进 行调整。 附图说明
图 1是本发明自适应调节频响的方法一实施方式的流程图；
图 2是本发明自适应调节频响的方法另一实施方式的流程图；
图 3是本发明自适应调节频响的方法在手机通话场景中环境噪声的时域信 息示意图；
图 4是本发明自适应调节频响的方法在手机通话场景中环境噪声的频域信 息示意图；
图 5是本发明自适应调节频响的方法在手机通话场景中环境噪声的频响曲 线示意图；
图 6是本发明自适应调节频响的方法在手机通话场景中手机内部通路和环 境噪声的频响曲线叠加的示意图；
图 7是本发明自适应调节频响的方法在手机通话场景中改善后的手机内部 通路频响和环境噪声的频响曲线叠加的示意图；
图 8是本发明终端一实施方式的结构示意图；
图 9是本发明终端另一实施方式的结构示意图。 具体实施方式
下面结合附图和实施方式对本发明进行详细说明。
参阅图 1， 图 1是本发明自适应调节频响的方法一实施方式的流程图， 包 括：
步骤 S101 : 在终端检测到用户声音的振幅小于第一阔值时， 终端的声音 拾取器对环境声音进行声音拾取， 获得环境声音的频响曲线和响度。
声音拾取器是一个声电转换器， 可以对声音进行声音拾取， 包括但不限于 各种类型的麦克等。
频响即频率响应，指将一个以恒电压输出的音频信号与系统相连接时， 音
箱产生的声压随频率的变化而发生增大或衰减、相位随频率而发生变化的现象， 这种声压和相位与频率的相关联的变化关系（变化量)称为频率响应， 单位是分 贝（Db)。 音响系统的频率特性常用频率响应曲线来描述， 频率响应曲线的纵坐 标表示功率 （单位是分贝）， 横坐标表示频率 （单位是赫兹）， 为了记录方便， 横坐标的标尺为对数型的， 纵坐标则是线性的。
响度是指声音的强弱， 即声音响亮的程度， 根据人耳对声音的主观判断， 可以把声音排成由轻到响的序列， 响度的大小主要依赖于声强， 也与声音的频 率有关。
用户离声音拾取器的距离最近， 周围环境声音离声音拾取器的距离远， 用 户在说话时， 用户声音的振幅是大于环境声音的振幅的， 第一阔值是判断用户 没有说话的阔值， 因此在终端检测到用户声音的振幅小于第一阔值时，说明用 户没有说话， 此时终端的声音拾取器对环境声音进行声音拾取， 即可获得环境 声音的频响曲线和响度。
步骤 S102: 比较环境声音的频响曲线和响度以及终端预设的内部通路的 频响曲线和响度。
终端预先设置有内部通路的频响曲线和响度，将该内部通路的频响曲线和 响度调取出来， 和环境声音的频响曲线和响度进行分析比较， 可以获得比较结 果， 例如： 比较两者的频响曲线时， 在不同频率范围内， 内部通路声音的振幅 和环境声音的振幅的大小情况； 在哪个频率范围内， 内部通路声音的振幅大于 环境声音的振幅； 在哪个频率范围内， 内部通路声音的振幅小于环境声音的振 幅等等； 比较两者的响度时， 分析在不同频率范围内， 内部通路声音的响度和 环境声音的响度的大小情况等等。
步骤 S103: 根据比较结果， 调整终端内部通路在预定频率范围内的频响 曲线和响度，使得在预定频率范围内， 终端内部通路的频响曲线和响度与环境 声音的频响曲线和响度之间的区别大于预设条件。
在获得比较结果后， 如果在预定频率范围内， 终端内部通路的频响曲线和 响度与环境声音的频响曲线和响度之间的区别很小，不足以区分内部通路的频 响曲线和响度与环境声音的频响曲线和响度，那么调整终端内部通路在预定频 率范围内的频响曲线和响度，使得在预定频率范围内， 终端内部通路的频响曲
线和响度与环境声音的频响曲线和响度之间的区别大于预设条件。 区别于现有技术的情况，本发明终端的声音拾取器对环境的声音进行声音 拾取， 获得环境声音的频响曲线和响度； 比较环境声音的频响曲线和响度以及 终端预设的内部通路的频响曲线和响度； 根据比较结果， 调整终端内部通路的 频响曲线和响度。 终端通话时， 在很多情况下， 用户的声音和周围环境的声音 同时存在， 通过这种方式， 本发明使得在预定频率范围内， 终端内部通路的频 响曲线和响度与环境声音的频响曲线和响度之间的区别大于预设条件， 因此， 本发明能够应用于终端的通话场景， 且对频响和响度都进行调整。
参阅图 2， 图 2是本发明自适应调节频响的方法另一实施方式的流程图， 包括：
步骤 S201 : 在终端检测到环境声音的振幅大于第二阔值时， 自动开启终 端的声音拾取器进行声音拾取的功能。
终端在通话场景中，用户的声音和周围环境的声音^ ^多情况下是同时存在 的， 如果环境声音的振幅在可以接受的范围内时， 环境声音对用户通话的影响 可以接受，当环境声音的振幅超过可以接受的范围时，也就是大于第二阔值时， 环境声音对用户通话会产生很大的无法接受的影响， 此时， 即可自动开启终端 的声音拾取器进行声音拾取的功能
步骤 S202: 若终端检测到用户声音的振幅大于等于第一阔值， 则发送停 止对周围的声音进行声音拾取的指令，以防止声音拾取器对周围的声音进行声 音拾取时产生回声。
终端检测到用户声音的振幅大于等于第一阔值，表明在周围声音中有人的 声音， 如果声音拾取器对周围的声音继续进行声音拾取， 会产生回声， 此时， 终端可以发送指令，要求停止对周围的声音进行声音拾取。在终端检测到用户 声音的振幅小于第一阔值时， 声音拾取器再对周围的声音进行声音拾取。
需要说明的是， 步骤 S201和步骤 S202没有先后顺序， 可以同时操作， 也 可以分别操作。
步骤 S203: 在终端检测到用户声音的振幅小于第一阔值时， 终端的声音 拾取器对环境声音进行声音拾取， 获得环境声音的频响曲线和响度。
用户离声音拾取器的距离最近， 周围环境声音离声音拾取器的距离远， 用
户在说话时， 用户声音的振幅是大于环境声音的振幅的， 第一阔值是判断用户 没有说话的阔值， 因此在终端检测到用户声音的振幅小于第一阔值时，说明用 户没有说话， 此时终端的声音拾取器对环境声音进行声音拾取， 即可获得环境 声音的频响曲线和响度。
步骤 S204: 比较环境声音的频响曲线和响度以及终端预设的内部通路的 频响曲线和响度。
终端预先设置有内部通路的频响曲线和响度，将该内部通路的频响曲线和 响度调取出来， 和环境声音的频响曲线和响度进行分析比较， 可以获得比较结 果， 例如： 比较两者的频响曲线时， 在不同频率范围内， 内部通路声音的振幅 和环境声音的振幅的大小情况； 在哪个频率范围内， 内部通路声音的振幅大于 环境声音的振幅； 在哪个频率范围内， 内部通路声音的振幅小于环境声音的振 幅等等； 比较两者的响度时， 分析在不同频率范围内， 内部通路声音的响度和 环境声音的响度的大小情况等等。
其中， 步骤 S204具体包括： 利用数字信号处理技术比较所述环境声音的 频响曲线和响度以及终端预设的内部通路的频响曲线和响度。
数字信号处理技术是将信号以数字方式表示并处理的技术。数字信号处理 的目的是对真实世界的连续模拟信号进行测量或滤波。因此在进行数字信号处 理之前需要将信号从模拟域转换到数字域， 这通常通过模数转换器实现。 而数 字信号处理的输出经常也要变换到模拟域， 这是通过数模转换器实现的。数字 信号处理的算法需要利用计算机或专用处理设备如数字信号处理器（DSP )和 专用集成电路（ASIC ) 等。 数字信号处理技术及设备具有灵活、 精确、 抗干 扰强、 设备尺寸小、 造价低、 速度快等突出优点， 这些都是模拟信号处理技术 与设备所无法比拟的。
步骤 S205: 根据比较结果， 调整终端内部通路在预定频率范围内的频响 曲线和响度，使得在预定频率范围内， 终端内部通路的频响曲线和响度与环境 声音的频响曲线和响度之间的区别大于预设条件。
在获得比较结果后， 如果在预定频率范围内， 终端内部通路的频响曲线和 响度与环境声音的频响曲线和响度之间的区别很小，不足以区分内部通路的频 响曲线和响度与环境声音的频响曲线和响度，那么调整终端内部通路在预定频
率范围内的频响曲线和响度，使得在预定频率范围内， 终端内部通路的频响曲 线和响度与环境声音的频响曲线和响度之间的区别大于预设条件。
其中， 步骤 S205具体包括： 若在预定频率范围内， 终端内部通路的频响 曲线和响度与环境声音的频响曲线和响度之间的区别小于或等于预设条件，则 提高终端内部通路在预定频率范围内频响曲线的纵坐标所对应的数值和响度， 使得在预定频率范围内，终端内部通路的频响曲线和响度与所述环境声音的频 响曲线和响度之间的区别大于预设条件。
例如， 以手机为例， 如果手机受话器的试听频率范围是 300-4000Hz， 此 时，可以设定预定频率范围为 300-4000HZ，预设条件可以设置为在 300-4000HZ 范围内，手机内部通路的频响曲线与环境声音的频响曲线的纵坐标之间的差值 为 XdB， 如果手机内部通路的频响曲线与环境声音的频响曲线的纵坐标之间 的差值小于 XdB， 则提高手机内部通路的频响曲线纵坐标的数值， 使得手机 内部通路的频响曲线与环境声音的频响曲线的纵坐标之间的差值大于 XdB， 此处 X的值需要试验确定或者根据具体的实际情况确定， 一般 X为 6dB时， 人耳可以清晰感知差异。
下面举例说明本发明的一个具体应用， 终端以手机为例， 声音拾取器以麦 克为例， 环境声音以嘈杂环境噪声为例。
本发明很适合嘈杂环境噪声时手机的通话场景，假设手机用户走过一工地 附近时， 恰好切割机工作声非常大， 此时用户收到来电如果在这种场景接听电 话， 很大程度上是无法听清楚的， 环境噪声时域及频域信息分别如图 3和图 4 所示， 此时，从获得的环境噪声的频响曲线图可以发现环境噪声在高频部分声 压级数值很大（系列 2 )， 如图 5所示， 此时读取手机受话器内部通路频响曲 线及响度设置， 将环境噪声 （系歹 ij 2 )和手机内部通路（系列 1 ) 的频响曲线 叠加在一起， 如图 6所示， 通过图 6可以看出， 受话器内部通路的频响及响度 在高频部分不能掩盖环境噪声， 如果仅仅提升受话器内部通路的响度， 无法达 到清晰通话的目的， 但是如果提升内部通路低频部分频响 （系列 3 ) 的同时， 对整个内部通路的响度略有提升， 将会明显改善通话的清晰度，提升频响及响 度部分如图 7所示， 通过对比图 6及图 7， 可以看出在低频部分手机受话器的 内部通路的频响有一部分低于环境噪声的频响， 因此， 在手机受话器内部通路
频响和响度处理时需要在对应的低于环境噪声频响的频率部分提高一些，这样 才能保证内部通路在受话器的所有频段上 （例如 300-4000HZ ) 的声音不会被 背景噪声所压制， 以达到提升通话效果的目的。
总之， 本发明终端的声音拾取器对环境的声音进行声音拾取， 获得环境声 音的频响曲线和响度；比较环境声音的频响曲线和响度以及终端预设的内部通 路的频响曲线和响度； 根据比较结果， 调整终端内部通路的频响曲线和响度。 终端通话时， 在^ ^多情况下， 用户的声音和周围环境的声音同时存在， 通过这 种方式， 本发明使得在预定频率范围内， 终端内部通路的频响曲线和响度与环 境声音的频响曲线和响度之间的区别大于预设条件， 因此，本发明能够应用于 终端的通话场景， 且对频响和响度都进行调整。
参阅图 8和图 9， 图 8和图 9是本发明终端两个实施方式的结构示意图， 该终端包括： 声音拾取模块 101、 比较模块 102以及调整模块 103。
声音拾取模块 101用于在终端检测到用户声音的振幅小于第一阔值时，终 端的声音拾取器对环境声音进行声音拾取， 获得环境声音的频响曲线和响度， 并将环境声音的频响曲线和响度向比较模块 102发送。
用户离声音拾取器的距离最近， 周围环境声音离声音拾取器的距离远， 用 户在说话时， 用户声音的振幅是大于环境声音的振幅的， 第一阔值是判断用户 没有说话的阔值， 因此在终端检测到用户声音的振幅小于第一阔值时，说明用 户没有说话， 此时终端的声音拾取器对环境声音进行声音拾取， 即可获得环境 声音的频响曲线和响度。
比较模块 102用于接收声音拾取模块 101发送的环境声音的频响曲线和响 度，比较环境声音的频响曲线和响度以及终端预设的内部通路的频响曲线和响 度， 并将比较结果向调整模块 103发送。
终端预先设置有内部通路的频响曲线和响度，将该内部通路的频响曲线和 响度调取出来， 和环境声音的频响曲线和响度进行分析比较， 可以获得比较结 果， 例如： 比较两者的频响曲线时， 在不同频率范围内， 内部通路声音的振幅 和环境声音的振幅的大小情况； 在哪个频率范围内， 内部通路声音的振幅大于 环境声音的振幅； 在哪个频率范围内， 内部通路声音的振幅小于环境声音的振 幅等等； 比较两者的响度时， 分析在不同频率范围内， 内部通路声音的响度和
环境声音的响度的大小情况等等。
比较模块 102具体用于利用数字信号处理技术比较环境声音的频响曲线 和响度以及终端预设的内部通路的频响曲线和响度。
数字信号处理技术是将信号以数字方式表示并处理的技术。数字信号处理 的目的是对真实世界的连续模拟信号进行测量或滤波。因此在进行数字信号处 理之前需要将信号从模拟域转换到数字域， 这通常通过模数转换器实现。 而数 字信号处理的输出经常也要变换到模拟域， 这是通过数模转换器实现的。数字 信号处理的算法需要利用计算机或专用处理设备如数字信号处理器（DSP )和 专用集成电路（ASIC ) 等。 数字信号处理技术及设备具有灵活、 精确、 抗干 扰强、 设备尺寸小、 造价低、 速度快等突出优点， 这些都是模拟信号处理技术 与设备所无法比拟的。
调整模块 103用于接收比较模块 102发送的比较结果，根据比较结果， 调 整终端内部通路在预定频率范围内的频响曲线和响度，使得在预定频率范围内， 终端内部通路的频响曲线和响度与环境声音的频响曲线和响度之间的区别大 于预设条件。
在获得比较结果后， 如果在预定频率范围内， 终端内部通路的频响曲线和 响度与环境声音的频响曲线和响度之间的区别很小，不足以区分内部通路的频 响曲线和响度与环境声音的频响曲线和响度，那么调整终端内部通路在预定频 率范围内的频响曲线和响度，使得在预定频率范围内， 终端内部通路的频响曲 线和响度与环境声音的频响曲线和响度之间的区别大于预设条件。
调整模块 103具体用于在预定频率范围内，终端内部通路的频响曲线和响 度与环境声音的频响曲线和响度之间的区别小于或等于预设条件时，提高终端 内部通路在预定频率范围内频响曲线的纵坐标所对应的数值和响度，使得在预 定频率范围内，终端内部通路的频响曲线和响度与环境声音的频响曲线和响度 之间的区别大于预设条件。
参阅图 9， 终端还包括开启模块 104， 开启模块 104用于在终端检测到环 境声音的振幅大于第二阔值时， 自动开启终端的声音拾取器进行声音拾取的功 能。
参阅图 9， 终端还包括发送模块 105， 发送模块 105用于在终端检测到用
户声音的振幅大于等于第一阔值时，发送停止对周围的声音进行声音拾取的指 令， 以防止声音拾取器对周围的声音进行声音拾取时产生回声。
总之， 本发明终端的声音拾取器对环境的声音进行声音拾取， 获得环境声 音的频响曲线和响度；比较环境声音的频响曲线和响度以及终端预设的内部通 路的频响曲线和响度； 根据比较结果， 调整终端内部通路的频响曲线和响度。 终端通话时， 在^ ^多情况下， 用户的声音和周围环境的声音同时存在， 通过这 种方式， 本发明使得在预定频率范围内， 终端内部通路的频响曲线和响度与环 境声音的频响曲线和响度之间的区别大于预设条件， 因此，本发明能够应用于 终端的通话场景， 且对频响和响度都进行调整。
本发明还提供一种自适应调节频响的装置，该装置包括处理器以及和处理 器偶联的存储器。
所述处理器用于在终端检测到用户声音的振幅小于第一阔值时，发出指令 要求终端的声音拾取器对环境声音进行声音拾取，获得所述环境声音的频响曲 线和响度；比较所述环境声音的频响曲线和响度以及终端预设的内部通路的频 响曲线和响度； 根据所述比较结果， 调整所述终端内部通路在预定频率范围内 的频响曲线和响度，使得在所述预定频率范围内， 所述终端内部通路的频响曲 线和响度与所述环境声音的频响曲线和响度之间的区别大于预设条件。
以上所述仅为本发明的实施方式， 并非因此限制本发明的专利范围， 凡是利用 本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用 在其他相关的技术领域， 均同理包括在本发明的专利保护范围内。
Claims
1.一种自适应调节频响的方法， 其特征在于， 包括：
在终端检测到用户声音的振幅小于第一阔值时，终端的声音拾取器对环境 声音进行声音拾取， 获得所述环境声音的频响曲线和响度；
比较所述环境声音的频响曲线和响度以及终端预设的内部通路的频响曲 线和响度；
根据所述比较结果，调整所述终端内部通路在预定频率范围内的频响曲线 和响度，使得在所述预定频率范围内， 所述终端内部通路的频响曲线和响度与 所述环境声音的频响曲线和响度之间的区别大于预设条件。
2.根据权利要求 1所述的方法， 其特征在于， 所述根据所述比较结果， 调 整所述终端内部通路在预定频率范围内的频响曲线和响度的步骤， 包括： 若在所述预定频率范围内，所述终端内部通路的频响曲线和响度与所述环 境声音的频响曲线和响度之间的区别小于或等于预设条件，则提高所述终端内 部通路在预定频率范围内频响曲线的纵坐标所对应的数值和响度，使得在所述 预定频率范围内，所述终端内部通路的频响曲线和响度与所述环境声音的频响 曲线和响度之间的区别大于预设条件。
3.根据权利要求 1所述的方法， 其特征在于， 所述比较所述环境声音的频 响曲线和响度以及终端预设的内部通路的频响曲线和响度的步骤， 包括： 利用数字信号处理技术比较所述环境声音的频响曲线和响度以及终端预 设的内部通路的频响曲线和响度。
4.根据权利要求 1所述的方法， 其特征在于， 所述在终端检测到用户声音 的振幅小于第一阔值时， 终端的声音拾取器对环境声音进行声音拾取， 获得所 述环境声音的频响曲线和响度的步骤之前， 包括：
在终端检测到环境声音的振幅大于第二阔值时，自动开启所述终端的声音 拾取器进行声音拾取的功能。
5.根据权利要求 1至 4任一项所述的方法， 其特征在于， 所述在终端检测 到用户声音的振幅小于第一阔值时，终端的声音拾取器对周围的声音进行声音 拾取， 获得所述周围声音的频响曲线和响度的步骤之前， 包括：
若所述终端检测到用户声音的振幅大于等于第一阔值，则发送停止对周围 的声音进行声音拾取的指令，以防止声音拾取器对周围的声音进行声音拾取时 产生回声。
6.—种终端， 其特征在于， 所述终端包括： 声音拾取模块、 比较模块以及 调整模块；
所述声音拾取模块用于在终端检测到用户声音的振幅小于第一阔值时，终 端的声音拾取器对环境声音进行声音拾取，获得所述环境声音的频响曲线和响 度， 并将所述环境声音的频响曲线和响度向所述比较模块发送；
所述比较模块用于接收所述声音拾取模块发送的所述环境声音的频响曲 线和响度，比较所述环境声音的频响曲线和响度以及终端预设的内部通路的频 响曲线和响度， 并将所述比较结果向所述调整模块发送；
所述调整模块用于接收所述比较模块发送的比较结果，根据所述比较结果， 调整所述终端内部通路在预定频率范围内的频响曲线和响度，使得在所述预定 频率范围内，所述终端内部通路的频响曲线和响度与所述环境声音的频响曲线 和响度之间的区别大于预设条件。
7.根据权利要求 6所述的终端， 其特征在于， 所述调整模块具体用于在所 述预定频率范围内，所述终端内部通路的频响曲线和响度与所述环境声音的频 响曲线和响度之间的区别小于或等于预设条件时，提高所述终端内部通路在预 定频率范围内频响曲线的纵坐标所对应的数值和响度，使得在所述预定频率范 围内，所述终端内部通路的频响曲线和响度与所述环境声音的频响曲线和响度 之间的区别大于预设条件。
8.根据权利要求 6所述的终端， 其特征在于， 所述比较模块具体用于利用 数字信号处理技术比较所述环境声音的频响曲线和响度以及终端预设的内部 通路的频响曲线和响度。
9.根据权利要求 6所述的终端， 其特征在于， 所述终端还包括开启模块， 所述开启模块用于在终端检测到环境声音的振幅大于第二阔值时， 自动开启所 述终端的声音拾取器进行声音拾取的功能。
10.根据权利要求 6至 9任一项所述的终端， 其特征在于， 所述终端还包 括发送模块，所述发送模块用于在所述终端检测到用户声音的振幅大于等于第
一阔值时，发送停止对周围的声音进行声音拾取的指令， 以防止声音拾取器对 周围的声音进行声音拾取时产生回声。
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| CN104468930B (zh) * | 2013-09-17 | 2018-08-31 | 南京中兴软件有限责任公司 | 一种放音响度调整方法及装置 |
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| CN105786443B (zh) * | 2016-03-21 | 2018-07-06 | 腾讯科技（深圳）有限公司 | 一种频响校正方法、处理芯片及终端设备 |
| CN106385658B (zh) * | 2016-09-08 | 2019-05-31 | 歌尔科技有限公司 | 智能眼镜的麦克风声学性能调节方法和智能眼镜 |
| CN107071680B (zh) * | 2017-04-19 | 2019-09-13 | 歌尔科技有限公司 | 一种声学产品的调音方法和装置 |
| EP3619808A4 (en) * | 2017-05-04 | 2020-12-23 | Harman International Industries, Incorporated | METHOD AND DEVICE FOR ADJUSTING AN AUDIO SIGNAL AND AUDIO SYSTEM |
| CN107402738B (zh) * | 2017-06-02 | 2020-06-02 | 捷开通讯(深圳)有限公司 | 外部终端及其配置虚拟音频场景的方法、存储装置 |
| CN107205201B (zh) * | 2017-06-06 | 2019-08-27 | 歌尔科技有限公司 | 音频信号控制方法及装置 |
| CN109686024A (zh) * | 2017-12-31 | 2019-04-26 | 湖南汇博电子科技股份有限公司 | 火灾逃生播报方法及系统 |
| CN108418961B (zh) * | 2018-02-13 | 2021-07-30 | 维沃移动通信有限公司 | 一种音频播放方法和移动终端 |
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| CN1220056A (zh) * | 1996-04-04 | 1999-06-16 | 艾利森公司 | 自动调节音频响应以改善清晰度的方法 |
| CN102436821A (zh) * | 2011-12-02 | 2012-05-02 | 海能达通信股份有限公司 | 一种自适应调节音效的方法和设备 |
| CN103259898A (zh) * | 2013-04-18 | 2013-08-21 | 华为终端有限公司 | 自适应调节频响的方法及终端 |
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| US7756222B2 (en) * | 2006-05-04 | 2010-07-13 | Integrated System Solution Corporation | Adaptive quantization method and apparatus for an OFDM receiver |
| CN102883070A (zh) * | 2012-10-15 | 2013-01-16 | 上海华勤通讯技术有限公司 | 移动终端及其调节方法 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1220056A (zh) * | 1996-04-04 | 1999-06-16 | 艾利森公司 | 自动调节音频响应以改善清晰度的方法 |
| CN102436821A (zh) * | 2011-12-02 | 2012-05-02 | 海能达通信股份有限公司 | 一种自适应调节音效的方法和设备 |
| CN103259898A (zh) * | 2013-04-18 | 2013-08-21 | 华为终端有限公司 | 自适应调节频响的方法及终端 |
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