Active sound generation device

An active sound generation device, configured to generate a sound effect in a vehicle interior, comprising:

• a low sampling rate generation part, generating a low sampling rate signal by lowering a sampling rate;
• a processing frequency setting part, setting the sampling rate of the low sampling rate generation part;
• a high sampling rate generation part, amplifying the sampling rate of the low sampling rate signal to generate a high sampling rate signal as the sound effect;
• and
• a speaker, outputting the sound effect, wherein
• the vehicle comprises a vehicle information acquisition part, configured to obtain a vehicle speed of the vehicle and a rotation speed of a driving force generation device of the vehicle, and
• the active sound generation device further comprises a sampling rate frequency table, configured to store the sampling rate corresponding to the vehicle speed or the rotation speed,
• wherein the processing frequency setting part is configured to:
• set the sampling rate according to the sampling rate frequency table and the vehicle speed or the rotation speed obtained by the vehicle information acquisition part;
• and
• provide the sampling rate to the low sampling rate generation part and the high sampling rate generation part.