Signal processing apparatus and signal processing method

A signal processing apparatus, comprising:

• a microphone configured to collect an ambient sound to generate an ambient sound signal, wherein the signal processing apparatus has at least one of a noise cancellation function or an ambient sound listening function;
• an operation interface configured:
• designate a first level based on a first user input,
• set, based on the designated first level, an effecting degree of the noise canceling function;
• designate a second level based on a second user input,
• set, based on the designated second level, an effecting degree of the ambient sound listening function;
• and
• circuitry configured to generate an output sound signal based on the ambient sound signal, the effecting degree of the noise canceling function, and the effecting degree of the ambient sound listening function, wherein
• the effecting degree of the noise canceling function and the effecting degree of the ambient sound listening function corresponds to a first ratio,
• a minimum value of the effecting degree of the noise canceling function corresponds to a maximum value of the effecting degree of the ambient sound listening function, and
• a maximum value of the effecting degree of the noise canceling function corresponds to a minimum value of the effecting degree of the ambient sound listening function.

A signal processing method, comprising:

• collecting an ambient sound to generate an ambient sound signal, wherein
• the signal processing apparatus is connected to a device,
• the device receives each of a first user input and a second user input, and
• the signal processing apparatus has at least one of a noise cancellation function or an ambient sound listening function;
• designating a first level based on the first user input;
• setting, based on the designated first level, an effecting degree of the noise canceling function;
• designating a second level based on the second user input;
• setting, based on the designated second level, an effecting degree of the ambient sound listening function;
• and
• generating an output sound signal based on the ambient sound signal, the effecting degree of the noise canceling function, and the effecting degree of the ambient sound listening function, wherein
• the effecting degree of the noise canceling function and the effecting degree of the ambient sound listening function corresponds to a first ratio,
• a minimum value of the effecting degree of the noise canceling function corresponds to a maximum value of the effecting degree of the ambient sound listening function, and
• a maximum value of the effecting degree of the noise canceling function corresponds to a minimum value of the effecting degree of the ambient sound listening function.

A non-transitory computer-readable medium having stored thereon, computer-executable instructions which, when executed by a processor, cause the processor to execute operations, the operations comprising:

• collecting an ambient sound to generate an ambient sound signal, wherein
• the signal processing apparatus is connected to a device,
• the device receives each of a first user input and a second user input, and
• the signal processing apparatus has at least one of a noise cancellation function or an ambient sound listening function;
• designating a first level based on the first user input;
• setting, based on the designated first level, an effecting degree of the noise canceling function;
• designating a second level based on the second user input;
• setting, based on the designated second level, an effecting degree of the ambient sound listening function;
• and
• generating an output sound signal based on the ambient sound signal, the effecting degree of the noise canceling function, and the effecting degree of the ambient sound listening function, wherein
• the effecting degree of the noise canceling function and the effecting degree of the ambient sound listening function corresponds to a first ratio,
• a minimum value of the effecting degree of the noise canceling function corresponds to a maximum value of the effecting degree of the ambient sound listening function, and
• a maximum value of the effecting degree of the noise canceling function corresponds to a minimum value of the effecting degree of the ambient sound listening function.