Adjust volume

Focus Mode
Font Size
Last updated: 2025-07-18 10:54:26
This article will explain how to:
﻿Detect the volume level of local and remote microphones﻿
﻿Detect if remote users are speaking after being muted﻿
﻿Adjust the volume level of local and remote microphones﻿
Detect volume levels
Call enableAudioVolumeEvaluation to enable audio volume indication. After enabling this feature, the SDK will provide feedback on audio volume evaluation information for local or remote users in the TRTCCloudListener's onUserVoiceVolume callback, including volume level, voice detection, audio spectrum, etc.
Android
iOS
Mac
Windows
private TRTCCloud mCloud;
mCloud = TRTCCloud.sharedInstance(getApplicationContext());
mCloud.setListener(new TRTCCloudListener() {
    // Get audio volume evaluation information through the onUserVoiceVolume callback
    @Override
    public void onUserVoiceVolume(ArrayList<TRTCCloudDef.TRTCVolumeInfo> userVolumes, int totalVolume) {
        super.onUserVoiceVolume(userVolumes, totalVolume);
        // Update the UI here, for example, update the height of the sound column
    }
});
﻿
// Set the TRTCAudioVolumeEvaluateParams parameters
TRTCCloudDef.TRTCAudioVolumeEvaluateParams audioVolumeEvaluateParams = new TRTCCloudDef.TRTCAudioVolumeEvaluateParams();
audioVolumeEvaluateParams.enablePitchCalculation = false; // Whether to enable local voice frequency calculation
audioVolumeEvaluateParams.enableSpectrumCalculation = false; // Whether to enable sound spectrum calculation
audioVolumeEvaluateParams.enableVadDetection = false; // Whether to enable local voice detection
audioVolumeEvaluateParams.interval = 100; // Set the trigger interval for the onUserVoiceVolume callback to 100 ms
﻿
// Turn on the volume level prompt
mNewCloud.enableAudioVolumeEvaluation(true, audioVolumeEvaluateParams);
﻿
// Turn off the volume level prompt
mNewCloud.enableAudioVolumeEvaluation(false, audioVolumeEvaluateParams);
// AppDelegate.h
@interface AppDelegate : UIResponder <UIApplicationDelegate, TRTCCloudDelegate> // Add TRTCCloudDelegate interface declaration
﻿
@property (nonatomic, strong) TRTCCloud *trtcCloud; // Declare the trtcCloud instance
﻿
// AppDelegate.m
_trtcCloud = [TRTCCloud sharedInstance];
_trtcCloud.delegate = self;
﻿
// Set the TRTCAudioVolumeEvaluateParams parameters
TRTCAudioVolumeEvaluateParams *trtcAudioVolumeEvaluateParams = [[TRTCAudioVolumeEvaluateParams alloc] init];
trtcAudioVolumeEvaluateParams.enablePitchCalculation = NO; // Enable local voice frequency calculation
trtcAudioVolumeEvaluateParams.enableSpectrumCalculation = NO; // Enable sound spectrum calculation
trtcAudioVolumeEvaluateParams.enableVadDetection = NO; // Enable local voice detection
trtcAudioVolumeEvaluateParams.interval = 100; // Set the trigger interval of the onUserVoiceVolume callback to 100 ms
﻿
// Enable volume level prompt
[self.trtcCloud enableAudioVolumeEvaluation:YES withParams:trtcAudioVolumeEvaluateParams];
﻿
// Implement TRTCCloudDelegate callback method
- (void)onUserVoiceVolume:(NSArray<TRTCVolumeInfo *> *)userVolumes totalVolume:(NSInteger)totalVolume {
    // Process user volume information
    for (TRTCVolumeInfo *volumeInfo in userVolumes) {
        NSLog(@"User ID: %@, Volume: %ld", volumeInfo.userId, (long)volumeInfo.volume);
        // Update the UI here, such as updating the height of the volume bar
    }
}
﻿
// Turn off the volume level prompt
[self.trtcCloud enableAudioVolumeEvaluation:NO withParams:trtcAudioVolumeEvaluateParams];
// AppDelegate.h
@interface AppDelegate : NSObject <NSApplicationDelegate, TRTCCloudDelegate> // Add TRTCCloudDelegate interface declaration
﻿
@property (nonatomic, strong) TRTCCloud *trtcCloud; // Declare the trtcCloud instance
﻿
// AppDelegate.m
_trtcCloud = [TRTCCloud sharedInstance];
_trtcCloud.delegate = self;
﻿
// Set the TRTCAudioVolumeEvaluateParams parameters
TRTCAudioVolumeEvaluateParams *trtcAudioVolumeEvaluateParams = [[TRTCAudioVolumeEvaluateParams alloc] init];
trtcAudioVolumeEvaluateParams.enablePitchCalculation = NO; // Enable local voice frequency calculation
trtcAudioVolumeEvaluateParams.enableSpectrumCalculation = NO; // Enable sound spectrum calculation
trtcAudioVolumeEvaluateParams.enableVadDetection = NO; // Enable local voice detection
trtcAudioVolumeEvaluateParams.interval = 100; // Set the trigger interval of the onUserVoiceVolume callback to 100 ms
﻿
// Enable volume level prompt
[self.trtcCloud enableAudioVolumeEvaluation:YES withParams:trtcAudioVolumeEvaluateParams];
﻿
// Implement TRTCCloudDelegate callback method
- (void)onUserVoiceVolume:(NSArray<TRTCVolumeInfo *> *)userVolumes totalVolume:(NSInteger)totalVolume {
    // Process user volume information
    for (TRTCVolumeInfo *volumeInfo in userVolumes) {
        NSLog(@"User ID: %@, Volume: %ld", volumeInfo.userId, (long)volumeInfo.volume);
        // Update the UI here, such as updating the height of the volume bar
    }
}
﻿
// Turn off the volume level prompt
[self.trtcCloud enableAudioVolumeEvaluation:NO withParams:trtcAudioVolumeEvaluateParams];
// .h file
public: 
    ITRTCCloud* trtc_cloud_;
public: 
    virtual void onUserVoiceVolume(TRTCVolumeInfo* userVolumes, uint32_t userVolumesCount, uint32_t totalVolume) override;
﻿
// .cpp file
trtc_cloud_ = getTRTCSharedInstance();
trtc_cloud_ -> addCallback(this); 
﻿
TRTCAudioVolumeEvaluateParams trtcAudioVolumeEvaluteParams;
trtcAudioVolumeEvaluateParams.enablePitchCalculation = false; // Enable local voice frequency calculation
trtcAudioVolumeEvaluateParams.enableSpectrumCalculation = false; // Enable sound spectrum calculation
trtcAudioVolumeEvaluateParams.enableVadDetection = false; // Enable local voice detection
trtcAudioVolumeEvaluateParams.interval = 100; // Set the trigger interval of the onUserVoiceVolume callback to 100 ms
﻿
// Enable volume level prompt
trtc_cloud_ -> enableAudioVolumeEvaluation(true, trtcAudioVolumeEvaluateParams);
﻿
// Implement TRTCCloudDelegate callback method, replace CLASSNAME with your class name
void CLASSNAME::onUserVoiceVolume(TRTCVolumeInfo* userVolumes, uint32_t userVolumesCount, uint32_t totalVolume) {
    // Update the UI here, such as updating the height of the volume bar
}
﻿
// Turn off the volume level prompt
trtc_cloud_ -> enableAudioVolumeEvaluation(false, trtcAudioVolumeEvaluateParams);
Detect if remote users are speaking after being muted
Android
iOS
Mac
Windows
private TRTCCloud mCloud;
mCloud = TRTCCloud.sharedInstance(getApplicationContext());
mCloud.startLocalAudio(TRTCCloudDef.TRTC_AUDIO_QUALITY_SPEECH); // Turn on the microphone
﻿
mCloud.muteLocalAudio(true); // Turn off the microphone
﻿
// Create a new TRTC instance to detect microphone volume
private TRTCCloud mNewCloud;
mNewCloud = TRTCCloud.sharedInstance(getApplicationContext());
mNewCloud.setListener(new TRTCCloudListener() {
    // Obtain mCloud's audio volume evaluation information through the onUserVoiceVolume callback
    @Override
    public void onUserVoiceVolume(ArrayList<TRTCCloudDef.TRTCVolumeInfo> userVolumes, int totalVolume) {
        super.onUserVoiceVolume(userVolumes, totalVolume);
        // Update the UI here, for example, update the height of the sound column
    }
});
﻿
// Set the TRTCAudioVolumeEvaluateParams parameters
TRTCCloudDef.TRTCAudioVolumeEvaluateParams audioVolumeEvaluateParams = new TRTCCloudDef.TRTCAudioVolumeEvaluateParams();
audioVolumeEvaluateParams.enablePitchCalculation = false; // Whether to enable local voice frequency calculation
audioVolumeEvaluateParams.enableSpectrumCalculation = false; // Whether to enable sound spectrum calculation
audioVolumeEvaluateParams.enableVadDetection = false; // Whether to enable local voice detection
audioVolumeEvaluateParams.interval = 100; // Set the trigger interval for the onUserVoiceVolume callback to 100 ms
﻿
// Turn on the volume level prompt
mNewCloud.enableAudioVolumeEvaluation(true, audioVolumeEvaluateParams);
// AppDelegate.h
@interface AppDelegate : UIResponder <UIApplicationDelegate, TRTCCloudDelegate> // Add TRTCCloudDelegate interface declaration
﻿
@property (nonatomic, strong) TRTCCloud *trtcCloud; // Declare the trtcCloud instance
@property (nonatomic, strong) TRTCCloud *newTRTCCloud; // Declare the newTRTCCloud instance
﻿
﻿
// AppDelegate.m
_trtcCloud = [TRTCCloud sharedInstance];
_trtcCloud.delegate = self;
[self.trtcCloud startLocalAudio:TRTCAudioQualitySpeech]; // Turn the mic on
﻿
[self.trtcCloud muteLocalAudio:YES]; // Turn off the mic
﻿
// Initialize a new TRTC instance
_newTRTCCloud = [TRTCCloud sharedInstance];
_newTRTCCloud.delegate = self;
﻿
// Set the TRTCAudioVolumeEvaluateParams parameters
TRTCAudioVolumeEvaluateParams *trtcAudioVolumeEvaluateParams = [[TRTCAudioVolumeEvaluateParams alloc] init];
trtcAudioVolumeEvaluateParams.enablePitchCalculation = NO; // Enable local voice frequency calculation
trtcAudioVolumeEvaluateParams.enableSpectrumCalculation = NO; // Enable sound spectrum calculation
trtcAudioVolumeEvaluateParams.enableVadDetection = NO; // Enable local voice detection
trtcAudioVolumeEvaluateParams.interval = 100; // Set the trigger interval of the onUserVoiceVolume callback to 100 ms
﻿
// Enable volume level prompt
[self.newTRTCCloud enableAudioVolumeEvaluation:YES withParams:trtcAudioVolumeEvaluateParams];
﻿
// Implement TRTCCloudDelegate callback method
- (void)onUserVoiceVolume:(NSArray<TRTCVolumeInfo *> *)userVolumes totalVolume:(NSInteger)totalVolume {
    // Process user volume information
    for (TRTCVolumeInfo *volumeInfo in userVolumes) {
        NSLog(@"User ID: %@, Volume: %ld", volumeInfo.userId, (long)volumeInfo.volume);
        // Update the UI here, such as updating the height of the volume bar
    }
}
// AppDelegate.h
@interface AppDelegate : NSObject <NSApplicationDelegate, TRTCCloudDelegate> // Add TRTCCloudDelegate interface declaration
﻿
@property (nonatomic, strong) TRTCCloud *trtcCloud; // Declare the trtcCloud instance
@property (nonatomic, strong) TRTCCloud *newTRTCCloud; // Declare the newTRTCCloud instance
﻿
﻿
// AppDelegate.m
_trtcCloud = [TRTCCloud sharedInstance];
_trtcCloud.delegate = self;
[self.trtcCloud startLocalAudio:TRTCAudioQualitySpeech]; // Turn the mic on
﻿
[self.trtcCloud muteLocalAudio:YES]; // Turn off the mic
﻿
// Initialize a new TRTC instance
_newTRTCCloud = [TRTCCloud sharedInstance];
_newTRTCCloud.delegate = self;
﻿
// Set the TRTCAudioVolumeEvaluateParams parameters
TRTCAudioVolumeEvaluateParams *trtcAudioVolumeEvaluateParams = [[TRTCAudioVolumeEvaluateParams alloc] init];
trtcAudioVolumeEvaluateParams.enablePitchCalculation = NO; // Enable local voice frequency calculation
trtcAudioVolumeEvaluateParams.enableSpectrumCalculation = NO; // Enable sound spectrum calculation
trtcAudioVolumeEvaluateParams.enableVadDetection = NO; // Enable local voice detection
trtcAudioVolumeEvaluateParams.interval = 100; // Set the trigger interval of the onUserVoiceVolume callback to 100 ms
﻿
// Enable volume level prompt
[self.newTRTCCloud enableAudioVolumeEvaluation:YES withParams:trtcAudioVolumeEvaluateParams];
﻿
// Implement TRTCCloudDelegate callback method
- (void)onUserVoiceVolume:(NSArray<TRTCVolumeInfo *> *)userVolumes totalVolume:(NSInteger)totalVolume {
    // Process user volume information
    for (TRTCVolumeInfo *volumeInfo in userVolumes) {
        NSLog(@"User ID: %@, Volume: %ld", volumeInfo.userId, (long)volumeInfo.volume);
        // Update the UI here, such as updating the height of the volume bar
    }
}
// .h file
public: 
    ITRTCCloud* trtc_cloud_;
    ITRTCCloud* new_trtc_cloud;
public: 
    virtual void onUserVoiceVolume(TRTCVolumeInfo* userVolumes, uint32_t userVolumesCount, uint32_t totalVolume) override;
﻿
// .cpp file
trtc_cloud_ = getTRTCSharedInstance();
trtc_cloud_ -> addCallback(this); 
﻿
trtc_cloud_ -> startLocalAudio(TRTCAudioQualitySpeech); // Turn the mic on
﻿
trtc_cloud_ -> muteLocalAudio(true); // Turn off the mic
﻿
// Create a new TRTC instance to detect microphone volume
new_trtc_cloud_ = getTRTCSharedInstance();
new_trtc_cloud_ -> addCallback(this); 
﻿
TRTCAudioVolumeEvaluateParams trtcAudioVolumeEvaluteParams;
trtcAudioVolumeEvaluateParams.enablePitchCalculation = false; // Enable local voice frequency calculation
trtcAudioVolumeEvaluateParams.enableSpectrumCalculation = false; // Enable sound spectrum calculation
trtcAudioVolumeEvaluateParams.enableVadDetection = false; // Enable local voice detection
trtcAudioVolumeEvaluateParams.interval = 100; // Set the trigger interval of the onUserVoiceVolume callback to 100 ms
﻿
// Enable volume level prompt
new_trtc_cloud_ -> enableAudioVolumeEvaluation(true, trtcAudioVolumeEvaluateParams);
﻿
// Implement TRTCCloudDelegate callback method, replace CLASSNAME with your class name
void CLASSNAME::onUserVoiceVolume(TRTCVolumeInfo* userVolumes, uint32_t userVolumesCount, uint32_t totalVolume) {
    // Update the UI here, such as updating the height of the volume bar
}
Adjust volume level
Local Audio: The local microphone capture volume is set to 100 by default. You can call setAudioCaptureVolume to set the local audio capture volume.
Android
iOS
Mac
Windows
// Reduce the local microphone capture volume to 50
mCloud.setAudioCaptureVolume(50);
﻿
// Increase the local microphone capture volume to 100
mCloud.setAudioCaptureVolume(100);
// Reduce the local microphone capture volume to 50
[self.trtcCloud setAudioCaptureVolume:50];
﻿
// Increase the local microphone capture volume to 100
[self.trtcCloud setAudioCaptureVolume:100];
// Reduce the local microphone capture volume to 50
[self.trtcCloud setAudioCaptureVolume:50];
﻿
// Increase the local microphone capture volume to 100
[self.trtcCloud setAudioCaptureVolume:100];
// Reduce the local microphone capture volume to 50
trtc_cloud_ -> setAudioCaptureVolume(50);
﻿
// Increase the local microphone capture volume to 100
trtc_cloud_ -> setAudioCaptureVolume(100);
Remote Audio: The remote user volume playback size is set to 100 by default. You can call setRemoteAudioVolume to set the playback volume of a specific remote user. 
Android
iOS
Mac
Windows
// Reduce Tom's playback volume to 50
mCloud.setRemoteAudioVolume("Tom", 50);
﻿
// Increase Tom's playback volume to 100
mCloud.setRemoteAudioVolume("Tom", 100);
// Reduce Tom's playback volume to 50
[self.trtcCloud setRemoteAudioVolume:@"Tom" volume:50];
﻿
// Increase Tom's playback volume to 100
[self.trtcCloud setRemoteAudioVolume:@"Tom" volume:100];
// Reduce Tom's playback volume to 50
[self.trtcCloud setRemoteAudioVolume:@"Tom" volume:50];
﻿
// Increase Tom's playback volume to 100
[self.trtcCloud setRemoteAudioVolume:@"Tom" volume:100];
// Reduce Tom's playback volume to 50
trtc_cloud_ -> setRemoteAudioVolume("Tom", 50);
﻿
// Increase Tom's playback volume to 100
trtc_cloud_ -> setRemoteAudioVolume("Tom", 100);
Note:
The recommended value range for volume is 0 - 100. If the volume still feels too low after setting it to 100, you can set the maximum volume to 150. However, setting the volume above 100 carries the risk of distortion. Please proceed with caution.
Contact Us
If you have any requirements or feedback, you can contact: info_rtc@tencent.com.
Help and Support

Was this page helpful?
You can also Contact sales or Submit a Ticket for help.
Help us improve! Rate your documentation experience in 5 mins.
Feedback
tencent cloud

Tencent Real-Time Communication

Adjust volume

Detect volume levels

Detect if remote users are speaking after being muted

Adjust volume level

Contact Us

Help and Support
