diff --git a/modules/audio_coding/acm2/audio_coding_module.cc b/modules/audio_coding/acm2/audio_coding_module.cc
index 2c96fc45bb..f0b35ca0ae 100644
--- a/modules/audio_coding/acm2/audio_coding_module.cc
+++ b/modules/audio_coding/acm2/audio_coding_module.cc
@@ -50,15 +50,9 @@ class AudioCodingModuleImpl final : public AudioCodingModule {
   void ModifyEncoder(rtc::FunctionView<void(std::unique_ptr<AudioEncoder>*)>
                          modifier) override;
 
-  void QueryEncoder(
-      rtc::FunctionView<void(const AudioEncoder*)> query) override;
-
   // Get current send codec.
   absl::optional<CodecInst> SendCodec() const override;
 
-  // Get current send frequency.
-  int SendFrequency() const override;
-
   // Sets the bitrate to the specified value in bits/sec. In case the codec does
   // not support the requested value it will choose an appropriate value
   // instead.
@@ -592,12 +586,6 @@ void AudioCodingModuleImpl::ModifyEncoder(
   modifier(&encoder_stack_);
 }
 
-void AudioCodingModuleImpl::QueryEncoder(
-    rtc::FunctionView<void(const AudioEncoder*)> query) {
-  rtc::CritScope lock(&acm_crit_sect_);
-  query(encoder_stack_.get());
-}
-
 // Get current send codec.
 absl::optional<CodecInst> AudioCodingModuleImpl::SendCodec() const {
   rtc::CritScope lock(&acm_crit_sect_);
@@ -621,18 +609,6 @@ absl::optional<CodecInst> AudioCodingModuleImpl::SendCodec() const {
   }
 }
 
-// Get current send frequency.
-int AudioCodingModuleImpl::SendFrequency() const {
-  rtc::CritScope lock(&acm_crit_sect_);
-
-  if (!encoder_stack_) {
-    RTC_LOG(LS_ERROR) << "SendFrequency Failed, no codec is registered";
-    return -1;
-  }
-
-  return encoder_stack_->SampleRateHz();
-}
-
 void AudioCodingModuleImpl::SetBitRate(int bitrate_bps) {
   rtc::CritScope lock(&acm_crit_sect_);
   if (encoder_stack_) {
@@ -1284,12 +1260,4 @@ int AudioCodingModule::Codec(const char* payload_name,
   return i ? *i : -1;
 }
 
-// Checks the validity of the parameters of the given codec
-bool AudioCodingModule::IsCodecValid(const CodecInst& codec) {
-  bool valid = acm2::RentACodec::IsCodecValid(codec);
-  if (!valid)
-    RTC_LOG(LS_ERROR) << "Invalid codec setting";
-  return valid;
-}
-
 }  // namespace webrtc
diff --git a/modules/audio_coding/acm2/rent_a_codec.cc b/modules/audio_coding/acm2/rent_a_codec.cc
index 818e17f3b5..264c2a8cf5 100644
--- a/modules/audio_coding/acm2/rent_a_codec.cc
+++ b/modules/audio_coding/acm2/rent_a_codec.cc
@@ -80,10 +80,6 @@ absl::optional<CodecInst> RentACodec::CodecInstByParams(
   return ci;
 }
 
-bool RentACodec::IsCodecValid(const CodecInst& codec_inst) {
-  return ACMCodecDB::CodecNumber(codec_inst) >= 0;
-}
-
 absl::optional<bool> RentACodec::IsSupportedNumChannels(CodecId codec_id,
                                                         size_t num_channels) {
   auto i = CodecIndexFromId(codec_id);
diff --git a/modules/audio_coding/acm2/rent_a_codec.h b/modules/audio_coding/acm2/rent_a_codec.h
index 5de7815682..b0ad382d8a 100644
--- a/modules/audio_coding/acm2/rent_a_codec.h
+++ b/modules/audio_coding/acm2/rent_a_codec.h
@@ -128,7 +128,6 @@ class RentACodec {
   static absl::optional<CodecInst> CodecInstByParams(const char* payload_name,
                                                      int sampling_freq_hz,
                                                      size_t channels);
-  static bool IsCodecValid(const CodecInst& codec_inst);
 
   static inline bool IsPayloadTypeValid(int payload_type) {
     return payload_type >= 0 && payload_type <= 127;
diff --git a/modules/audio_coding/include/audio_coding_module.h b/modules/audio_coding/include/audio_coding_module.h
index 454e0e42b7..840a719fa1 100644
--- a/modules/audio_coding/include/audio_coding_module.h
+++ b/modules/audio_coding/include/audio_coding_module.h
@@ -150,20 +150,6 @@ class AudioCodingModule {
                    int sampling_freq_hz,
                    size_t channels);
 
-  ///////////////////////////////////////////////////////////////////////////
-  // bool IsCodecValid()
-  // Checks the validity of the parameters of the given codec.
-  //
-  // Input:
-  //   -codec              : the structure which keeps the parameters of the
-  //                         codec.
-  //
-  // Return value:
-  //   true if the parameters are valid,
-  //   false if any parameter is not valid.
-  //
-  static bool IsCodecValid(const CodecInst& codec);
-
   ///////////////////////////////////////////////////////////////////////////
   //   Sender
   //
@@ -210,11 +196,6 @@ class AudioCodingModule {
   virtual void ModifyEncoder(
       rtc::FunctionView<void(std::unique_ptr<AudioEncoder>*)> modifier) = 0;
 
-  // |modifier| is called exactly once with one argument: a const pointer to the
-  // current encoder (which is null if there is no current encoder).
-  virtual void QueryEncoder(
-      rtc::FunctionView<void(AudioEncoder const*)> query) = 0;
-
   // Utility method for simply replacing the existing encoder with a new one.
   void SetEncoder(std::unique_ptr<AudioEncoder> new_encoder) {
     ModifyEncoder([&](std::unique_ptr<AudioEncoder>* encoder) {
@@ -231,16 +212,6 @@ class AudioCodingModule {
   //
   virtual absl::optional<CodecInst> SendCodec() const = 0;
 
-  ///////////////////////////////////////////////////////////////////////////
-  // int32_t SendFrequency()
-  // Get the sampling frequency of the current encoder in Hertz.
-  //
-  // Return value:
-  //   positive; sampling frequency [Hz] of the current encoder.
-  //   -1 if an error has happened.
-  //
-  virtual int32_t SendFrequency() const = 0;
-
   ///////////////////////////////////////////////////////////////////////////
   // Sets the bitrate to the specified value in bits/sec. If the value is not
   // supported by the codec, it will choose another appropriate value.