Hearing device for own voice detection and method of operating a hearing device

A method of operating a hearing device configured to be worn at least partially at a head of a user, the method comprising:

• detecting a vibration conducted through the user's head to the hearing device, at least a part of the vibration caused by an own voice activity of the user;
• providing a vibration signal comprising information about said vibration;
• determining a presence of a first own voice characteristic in the vibration signal at a first vibration frequency associated with the first own voice characteristic, said associated first vibration frequency being selected such that it comprises a harmonic frequency of said part of the vibration caused by the own voice activity and the first own voice characteristic being indicative of said part of the vibration caused by the own voice activity;
• determining a presence of a second own voice characteristic in the vibration signal at an associated second vibration frequency;
• and
• identifying the own voice activity based on an identification criterion comprising said determined presence of the first own voice characteristic in the vibration signal at the associated vibration frequency and said presence of the second own voice characteristic in the vibration signal at the associated second vibration frequency.

A hearing device configured to be worn at least partially at a head of a user, the hearing device comprising:

• a vibration sensor configured to detect a vibration conducted through the user's head to the hearing device, at least a part of the vibration caused by an own voice activity of the user, and to output a vibration signal comprising information about said vibration;
• a processor communicatively coupled to the vibration sensor;
• a microphone configured to detect a sound conducted through an ambient environment of the user and to output an audio signal comprising information about said sound, the processor communicatively coupled to the microphone;
• wherein the processor is configured to:
• determine a presence of an own voice characteristic in the vibration signal at a vibration frequency associated with the own voice characteristic, said associated vibration frequency being selected such that it comprises a harmonic frequency of said part of the vibration caused by the own voice activity and the own voice characteristic being indicative of said part of the vibration caused by the own voice activity;
• determine a presence of the own voice characteristic in the audio signal at an audio frequency associated with the own voice characteristic, the own voice characteristic in the audio signal indicative of at least a part of said sound which is caused by the own voice activity;
• determine a signal feature of the vibration signal;
• determine a signal feature of the audio signal;
• determine a similarity measure between the signal feature of the vibration signal and the signal feature of the audio signal, wherein at least one of said presence of the own voice characteristic in the vibration signal at the associated vibration frequency and said presence of the own voice characteristic in the audio signal at the associated audio frequency is determined based on the similarity measure;
• and to
• identify the own voice activity based on an identification criterion comprising said presence of the own voice characteristic in the vibration signal at the associated, and said presence of the own voice characteristic in the audio signal at the associated audio frequency.

A method of operating a hearing device configured to be worn at least partially at a head of a user, the method comprising:

• detecting a vibration conducted through the user's head to the hearing device, at least a part of the vibration caused by an own voice activity of the user;
• detecting a sound conducted through an ambient environment of the user;
• providing a vibration signal comprising information about said vibration;
• providing an audio signal comprising information about said sound;
• determining a presence of an own voice characteristic in the vibration signal at a vibration frequency associated with the own voice characteristic, said associated vibration frequency being selected such that it comprises a harmonic frequency of said part of the vibration caused by the own voice activity and the own voice characteristic being indicative of said part of the vibration caused by the own voice activity;
• determining a presence of an own voice characteristic in the audio signal at an audio frequency associated with the own voice characteristic, the own voice characteristic in the audio signal indicative of at least a part of said sound which is caused by the own voice activity;
• determining a signal feature of the vibration signal;
• determining a signal feature of the audio signal;
• determining a similarity measure between the signal feature of the vibration signal and the signal feature of the audio signal;
• determining at least one of said presence of the own voice characteristic in the vibration signal at the associated vibration frequency and said presence of the own voice characteristic in the audio signal at the associated audio frequency is based on the similarity measure;
• and
• identifying the own voice activity based on an identification criterion comprising said determined presence of the own voice characteristic in the vibration signal at the associated vibration frequency, and said determined presence of the own voice characteristic in the audio signal at the associated audio frequency.

A hearing device configured to be worn at least partially at a head of a user, the hearing device comprising:

• a vibration sensor configured to detect a vibration conducted through the user's head to the hearing device, at least a part of the vibration caused by an own voice activity of the user, and to output a vibration signal comprising information about said vibration;
• a processor communicatively coupled to the vibration sensor;
• a microphone configured to detect a sound conducted through an ambient environment of the user and to output an audio signal comprising information about said sound, the processor communicatively coupled to the microphone;
• wherein the processor is configured to:
• determine an intensity of the audio signal;
• determine a presence of an own voice characteristic in the vibration signal at a vibration frequency associated with the own voice characteristic, said associated vibration frequency being selected such that it comprises a harmonic frequency of said part of the vibration caused by the own voice activity, the own voice characteristic being indicative of said part of the vibration caused by the own voice activity, and said audio signal intensity;
• and to identify the own voice activity based on an identification criterion comprising said presence of the own voice characteristic in the vibration signal at the associated.

A method of operating a hearing device configured to be worn at least partially at a head of a user, the method comprising:

• detecting a vibration conducted through the user's head to the hearing device, at least a part of the vibration caused by an own voice activity of the user;
• detecting a sound conducted through an ambient environment of the user;
• providing a vibration signal comprising information about said vibration;
• providing an audio signal comprising information about said sound;
• determining an intensity of the audio signal;
• determining a presence of an own voice characteristic in the vibration signal at a vibration frequency associated with the own voice characteristic, said associated vibration frequency being selected such that it comprises a harmonic frequency of said part of the vibration caused by the own voice activity, the own voice characteristic being indicative of said part of the vibration caused by the own voice activity, and said audio signal intensity;
• and
• identifying the own voice activity based on an identification criterion comprising said determined presence of the own voice characteristic in the vibration signal at the associated vibration frequency.