GB/T 45314-2025 Road vehicles - Performance requirements and test methods for hands free communication and voice interaction
1 Scope
This document specifies the performance requirements and test methods for hands-free communication and voice interaction of road vehicles.
This document is applicable to Categories M1 and N1 vehicles equipped with on-board speaker hands-free communication terminal, emergency communication terminal and voice interaction terminal.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ITU-T G.122-1993 Influence of national systems on stability and talker echo in international connections
ITU-T P.51 Artificial mouth
ITU-T P.57 Artificial ears
ITU-T P.58 Head and torso simulator for telephonometry, HATS
ITU-T P.79-2007 Calculation of loudness ratings for telephone sets
ITU-T P.501-2020 Test signals for use intelephonometry
ITU-T P.502-2000 Objective test methods for speech communication systems using complex test signals
ITU-T P.863-2018 Perceptual objective listening quality assessment
ITU-T P.863.1-2019 Application guide for recommendation P.863
ETSI EG202 396-3-2018 Speech and multimedia Transmission Quality (STQ); Speech Quality performance in the presence of background noise; Part 3: Background noise transmission - Objective test methods
ETSI TS103 558-2020 Speech and multimedia Transmission Quality (STQ); Methods for objective evaluation of listening effort
ETSI TS103 802-2023 Speech and multimedia Transmission Quality (STQ); Objective test method for the evaluation of echo impairments
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
system simulator
device for simulating a mobile communication network, equipped with a radio interface on one side and receiving/sending electrical input/output interface on the other side
3.2
device under test; DUT
device to be tested
Note: Refer to Categories M1 and N1 vehicles equipped with on-board speaker hands-free communication terminal, emergency communication terminal and voice interaction terminal.
3.3
codec
device or software that has encoding and decoding functions in digital communication
[Source: ITU-T P.1100-2019, 3.2.2]
3.4
narrowband speech
transmission frequency band covering voice services of at least 300Hz~3,400Hz
3.5
wideband speech
transmission frequency band covering voice services of at least 150Hz~7,000Hz
[Source: ITU-T P.1100-2019, 3.2.23]
3.6
hands-free terminal
communication terminal which is hand free during user talking
Note: Refer to on-board speaker hands-free communication terminal, including on-board speaker hands-free communication terminal and emergency communication terminal.
3.7
short range wireless transmission; SRWT
wireless transmission connection between on-board hands-free terminal and mobile phone inside the vehicle
[Source: ITU-T P.1100-2019, 3.2.21, modified]
3.8
composite source signal; CSS
signal composed of a variety of time domain signals
[Source: ITU-T P.1100-2019, 3.2.3]
3.9
head and torso simulator; HATS
human simulation apparatus, equipped with simulation ears and simulation mouth, covering from the top of the head down to the waist
Note: It is designed to simulate the sound pickup characteristics of ordinary human ears and the sound diffraction produced by medium-sized adults, and to reproduce the sound field of human mouth pronunciation for electro-acoustic measurement.
[Source: ITU-T P.58-2023, 3.1.6]
3.10
simulation ear
apparatus for measuring sound pressure, consisting of an acoustic coupling cavity and a calibrated microphone
Note: The acoustic coupling cavity shall be in the frequency range of 20Hz~20,000Hz, which is close to the acoustic impedance of ordinary adult ears. The simulation ear closest to the centerline of the vehicle is the inner simulation ear.
[Source: ITU-T P.57-2021, 3.2.3]
4 Quality requirements for hands-free terminal communication
4.1 Delay
4.1.1 Delay without using short range wireless transmission (SRWT)
Test according to 7.2.1 and the delay of driving seat shall meet the following requirements:
——the loopback delay (Trtd) is less than 210ms;
——the hands-free implementation related loopback delay (Trtdimp) caused by hands-free signal processing does not exceed 110ms.
4.1.2 Delay using short range wireless transmission (SRWT)
Test according to 7.2.1 and the delay of driving seat shall meet the following requirements:
——the loopback delay (Trtd) shall be less than 210ms and 130ms when using narrowband speech and wideband speech respectively;
——the hands-free implementation related loopback delay (Trtdimp) caused by hands-free signal processing does not exceed 110ms.
4.2 Loudness rating
4.2.1 Sending loudness rating
The sending loudness rating (SLR) of the driving seat shall be tested according to 7.2.2.1, and the SLR at the point of interconnection (POI) shall be within the range of 9dB~17dB.
4.2.2 Receiving loudness rating
The receiving loudness rating (RLR) of the driving seat shall be tested according to 7.2.2.2.
If the receiving volume cannot be adjusted, the RLR at the POI shall be within the range of -2dB~6dB.
The receiving volume, if adjustable, shall meet:
——RLR at least at one volume setting meets the above requirements;
——RLR of the nominal setting of the volume is at least 15dB greater than that of the maximum setting of the volume (if the volume is adjustable);
——at least one volume setting can ensure that the signal-to-noise ratio (S/N) is at least 6dB in any possible communication and noise environment.
4.2.3 Linearity of sending loudness rating
Test according to 7.2.2.3 and the delay of driving seat shall meet the following requirements:
——when the sending signal level is 3dB less than the nominal level, the deviation between the measured SLR and that measured using the nominal setting does not exceed -0.5dB;
——when the sending signal level is 6dB more than the nominal level, the deviation between the measured SLR and that measured using the nominal setting does not exceed 0.5dB.
Contents
1 Scope
2 Normative references
3 Terms and definitions
4 Quality requirements for hands-free terminal communication
4.1 Delay
4.2 Loudness rating
4.3 Sensitivity/frequency response
4.4 Voice quality of one-way communication
4.5 Idle channel noise
4.6 Out-of-band signal processing performance
4.7 Distortion
4.8 Echo suppression performance
4.9 Switch characteristics
4.10 Dual speaker performance
4.11 Background noise transmission
5 Emergency call communication quality requirements
5.1 Delay
5.2 Loudness rating
5.3 Sensitivity/frequency response
5.4 Idle channel noise
5.5 Echo suppression performance
5.6 Sending single speaker activation characteristics
5.7 Dual speaker performance
5.8 Background noise transmission
6 Voice interaction performance and functional requirements
6.1 Speech wakeup voice trigger
6.2 Acoustic source localization accuracy
6.3 Sentence recognition rate
6.4 Interaction success rate
6.5 Wakeup response time
6.6 Interaction response time
6.7 Voice interaction terminal function
7 Test methods
7.1 Test conditions
7.2 Communication quality test
7.3 Voice interaction performance and function test
Annex A (Normative) Typical noise scenario
A.1 Noise scenario for hands-free terminal communication quality and voice interaction performance test
A.2 Noise scenario for emergency call communication quality test
Annex B (Normative) On-board voice interaction terminal functions
B.1 Navigation model
B.2 Air conditioning model
B.3 Bluetooth telephone module
B.4 Audio module
B.5 Local settings module
B.6 Vehicle control setting module
B.7 Life service module
Annex C (Normative) Performance inspection of mobile phones for tests
C.1 Test system
C.2 Delay
C.3 Rating of response
C.4 Linearity
C.5 Sensitivity/frequency response
C.6 Sending noise cancellation performance
C.7 Voice quality of one-way communication
C.8 Determination of close of acoustic control
Annex D (Informative) Definition of delay
D.1 Definition of hands-free terminal delay
D.2 Definition of emergency call delay
Bibliography
道路车辆 免提通话和语音交互性能要求及试验方法
1 范围
本文件规定了道路车辆的免提通话和语音交互性能要求,并描述了相应的试验方法。
本文件适用于装配有车载扬声器免提通话终端、车载紧急呼叫终端、车载语音交互终端的M1类和N1类车辆。
2规范性引用文件
下列文件中的内容通过文中的规范性引用而构成本文件必不可少的条款。其中,注日期的引用文件,仅该日期对应的版本适用于本文件;不注日期的引用文件，其最新版本(包括所有的修改单)适用于本文件。
ITU-T G.122-1993 国内系统对国际连接的稳定度和发话回声的影响(Influence of national systems on stability and talker echo in international connections)
ITU-T P.51 人工嘴(Artificial mouth)
ITU-T P.57 人工耳(Artificial ears)
ITU-T P.58 电话电声测试所用的头和躯干模拟器(Head and torso simulator for telephonometry, HATS)
ITU-T P.79—2007 响度评定值的计算(Calculation of loudness ratings for telephone sets)
ITU-T P.501—2020 电话电声测试所用的测试信号(Test signals for use intelephonometry)
ITU-T P.502—2000 使用复杂信号的语音通信系统的客观测量方法(Objective test methods for speech communication systems using complex test signals)
ITU-T P.863—2018 聆听品质客观感知评估(Perceptual objective listening quality assessment)
ITU-T P.863.1—2019 P.863 建议的使用导则(Application guide for recommendation P.863)
ETSI EG202 396-3—2018 语音和多媒体传输质量(STQ);存在背景噪声时的语音质量表现;第3部分:背景噪声传输———客观测试方法[Speech and multimedia Transmission Quality(STQ); Speech Quality performance in the presence of background noise; Part 3: Background noise transmission-Objective test methods]
ETSI TS103 558—2020 语音和多媒体传输质量(STQ); 客观评估聆听努力程度的方法[Speech and multimedia Transmission Quality (STQ); Methods for objective assessment of listening effort]
ETSI TS103 802—2023 语音和多媒体传输质量(STQ);评估回声损伤的客观测试方法[Speech and multimedia Transmission Quality (STQ); Objective test method for the evaluation of echo impairments]
3术语和定义
下列术语和定义适用于本文件。
3.1
网络系统模拟器system simulator
用于模拟移动通信网络的设备,其一侧装有无线电接口,另一侧装有接受方向和发送方向的电输入/输出接口。
3.2
受试装置device under test; DUT
被测试的装置。
注:此处指搭载了车载扬声器免提通话终端、车载紧急呼叫终端、车载语音交互终端的M1类和N1类车辆。
3.3编解码器codec
数字通信中具有编码、解码功能的器件或软件。
[来源:ITU-T P.1100—2019, 3.2.2]
3.4
窄带语音narrowband speech
至少覆盖300Hz~3400Hz语音业务的传输频带。
3.5
宽带语音wideband speech
至少覆盖150Hz~7000Hz语音业务的传输频带。
[来源:ITU-T P.1100—2019, 3.2.23]
3.6
免提终端hands-free terminal
用户通话过程中无需手持的通话终端。
注:此处指车载扬声器免提通话终端,包含车载扬声器免提通话终端、车载紧急呼叫终端。
3.7
短距离无线传输 short range wireless transmission; SRWT
车辆内部车载免提终端和移动电话之间的无线传输连接。
[来源:ITU-T P.1100—2019, 3.2.21,有修改]
3.8
复合源信号composite source signal; CSS
由多种时域信号组成的信号。
[来源:ITU-T P.1100—2019, 3.2.3]
3.9
头部和躯干模拟器head and torso simulator; HATS
安装仿真耳和仿真嘴从头顶向下延伸到腰部的人体模拟设备。
注:其设计用于模拟一般人耳声音拾取特性及中等体型成年人所产生的声衍射,并重现人嘴部发音的声场,供电声测量使用。
[来源:ITU-T P.58—2023, 3.1.6]
3.10
仿真耳 simulation ear
由一个声耦合腔和一个经过校准的传声器组成的用来测量声压的设备。
注:声耦合腔在20Hz~20000Hz频率范围内,接近一般成年人耳的声阻抗。最接近车辆中心线的仿真耳为内侧耳。
[来源:ITU-T P.57—2021, 3.2.3]
4免提终端通话质量要求
4.1时延
4.1.1在不使用短距离无线传输(SRWT)情况下的时延
按7.2.1进行试验,驾驶员座位的时延应满足以下要求:
———环回时延(T rtd )小于210ms;
———由免提信号处理引入的免提实现相关环回时延(T rtdimp)不超过110ms
4.1.2 在使用 SRWT 情况下的时延
按 7.2.1 进行试验, 驾驶员座位的时延应满足以下要求:
———使用窄带语音时, T rtd 应小于 120 ms ; 使用宽带语音时, T rtd 小于 130 ms ;
———由 免提信号处理引 入的 T rtdimp 不超过 110 ms 。
4.2响度评定值
4.2.1发送方向响度评定值
驾驶员座位的发送方向响度评定值(SLR)按7.2.2.1进行试验,互连点(POI)处的SLR应处于9dB~17dB范围内。
4.2.2接收方向响度评定值
驾驶员座位的接收方向响度评定值(RLR)按7.2.2.2进行试验。
若接收方向音量不可调节,则POI处的RLR应处于-2dB~6dB范围内。
若接收方向音量可调节,则应满足:
———至少在一个音量设置RLR达到以上要求;
———标称音量RLR至少比最大音量(若音量可调)RLR大15dB;
———至少有一个音量设置能保证在任何可能的通话和噪声环境下,信噪比(S/N)至少为6dB。
4.2.3发送方向响度评定值的线性度
按7.2.2.3进行试验,驾驶员座位的SLR应满足:
———发送方向信号电平相对标称电平-3dB时,SLR与使用标称值测得的SLR的偏差不超过-0.5dB;
———发送方向信号电平相对标称电平+6dB时,SLR与使用标称值测得的SLR的偏差不超过0.5dB。
4.2.4接收方向响度评定值的线性度
按7.2.2.4进行试验,标称音量设置下,驾驶员座位的RLR应满足:
———接收方向信号电平相对标称电平-5dB时,RLR与使用标称值测得的RLR的偏差不超过-0.5dB;
———接收方向信号电平相对标称电平+5dB时,RLR与使用标称值测得的RLR的偏差不超过0.5dB
