Acoustic input-output devices
The embodiments of the present disclosure disclose an acoustic input-output device. The acoustic input-output device includes a loudspeaker assembly and a microphone. The loudspeaker assembly is configured to transmit sound waves by generating a first mechanical vibration. The microphone is configured to receive a second mechanical vibration of a voice signal source that is generated when the voice signal source provides a voice signal. The microphone generates a first signal and a second signal in response to the first mechanical vibration and the second mechanical vibration, respectively. In a specific frequency range, a ratio of an intensity of the first mechanical vibration to an intensity of the first signal is greater than a ratio of an intensity of the second mechanical vibration to an intensity of the second signal.
1 . An acoustic input-output device, comprising:
a loudspeaker assembly configured to transmit sound waves by generating a first mechanical vibration; and
a microphone configured to receive a second mechanical vibration of a voice signal source that is generated when the voice signal source provides a voice signal, the microphone generating a first signal and a second signal in response to the first mechanical vibration and the second mechanical vibration, respectively, wherein in a specific frequency range, a ratio of an intensity of the first mechanical vibration to an intensity of the first signal is greater than a ratio of an intensity of the second mechanical vibration to an intensity of the second signal; wherein
a first angle formed by a vibration direction of the microphone and a direction of the first mechanical vibration is within a set angle range, and the first angle is within an angle range of 20 degrees to 90 degrees.
2 . The acoustic input-output device of claim 1 , wherein the loudspeaker assembly is a bone conduction loudspeaker assembly, the bone conduction loudspeaker assembly includes a housing and a vibration component that is connected to the housing and configured to generate the first mechanical vibration, and the microphone is directly or indirectly connected to the housing.
3 . The acoustic input-output device of claim 2 , wherein when a user wears the acoustic input-output device, a clamping force formed between the acoustic input-output device and a contact portion of the user is within a range of 0.1N to 0.5N.
4 . The acoustic input-output device of claim 1 , further comprising a damping structure, wherein the microphone is connected to the loudspeaker assembly through the damping structure.
5 . The acoustic input-output device of claim 4 , wherein
the damping structure includes a vibration reduction material with an elastic modulus less than a first threshold, or
a thickness of the damping structure is within a range of 0.5 mm to 5 mm.
6 . The acoustic input-output device of claim 5 , wherein the elastic modulus of the vibration reduction material is within a range of 0.01 Mpa to 1000 Mpa.
7 . The acoustic input-output device of claim 4 , wherein a first portion of a surface of the microphone is configured to conduct the second mechanical vibration, and a second portion of the surface of the microphone is provided with the damping structure and connected to the loudspeaker assembly through the damping structure.
8 . The acoustic input-output device of claim 7 , wherein the first portion of the surface of the microphone is provided with a vibration transmission layer, and an elastic modulus of a material of the vibration transmission layer is greater than a second threshold.
9 . The acoustic input-output device of claim 1 , wherein the loudspeaker assembly includes a housing and a vibration component, there is a first connection between the housing and the vibration component, there is a second connection between the microphone and the housing, and the first connection includes a first damping structure.
10 . The acoustic input-output device of claim 9 , wherein
the second connection includes a second damping structure,
a mass of the vibration component is within a range of 0.005 g to 0.3 g, or
when a user wears the acoustic input-output device, a clamping force formed between the acoustic input-output device and a contact portion of the user is within a range of 0.01N to 0.05N.
11 . The acoustic input-output device of claim 1 , wherein the loudspeaker assembly includes a first diaphragm and a second diaphragm, and vibration directions of the first diaphragm and the second diaphragm are opposite.
12 . The acoustic input-output device of claim 11 , wherein
the loudspeaker assembly includes a housing, the housing including a first cavity and a second cavity, the first diaphragm and the second diaphragm being located in the first cavity and the second cavity, respectively; and
a first sound transmission hole and a second sound transmission hole are set on different side walls of the first cavity, a third sound transmission hole and a fourth sound transmission hole are set on different side walls of the second cavity, a phase of sound transmitted by the first sound transmission hole is the same as a phase of sound transmitted by the third sound transmission hole, and a phase of sound transmitted by the second sound transmission hole is the same as a phase of sound transmitted by the fourth sound transmission hole.
13 . The acoustic input-output device of claim 12 , wherein the first sound transmission hole and the third sound transmission hole are arranged on a first side wall of the housing, the second sound transmission hole and the fourth sound transmission hole are arranged on a second side wall of the housing, the first side wall for setting the first sound transmission hole and the third sound transmission hole is different from the second side wall for setting the second sound transmission hole and the fourth sound transmission hole, the first sound transmission hole and the second sound transmission hole are arranged on non-adjacent side walls of the housing, and the third sound transmission hole and the fourth sound transmission hole are arranged on the non-adjacent side walls of the housing.
14 . The acoustic input-output device of claim 12 , wherein
the loudspeaker assembly further includes a first magnetic circuit assembly and a second magnetic circuit assembly configured to form a magnetic field, the first magnetic circuit assembly being configured to cause the first diaphragm to vibrate, the second magnetic circuit assembly being configured to cause the second diaphragm to vibrate; and
the first cavity and the second cavity are spatially connected, and the first magnetic circuit assembly and the second magnetic circuit assembly are connected directly or indirectly.
15 . The acoustic input-output device of claim 1 , wherein the voice signal source is a vibration portion of a user providing the voice signal, and when the user wears the acoustic input-output device, a distance between the vibration portion of the user and the microphone is less than a third threshold, wherein the third threshold is not larger than 20 cm.
16 . The acoustic input-output device of claim 1 , wherein a ratio of the intensity of the second signal to the intensity of the first signal is greater than a threshold, wherein the ratio of the intensity of the second signal to the intensity of the first signal is greater than ¼.
17 . An acoustic input-output device, comprising:
a loudspeaker assembly configured to transmit sound waves by generating a first mechanical vibration; and
a microphone configured to receive a second mechanical vibration of a voice signal source that is generated when the voice signal source provides a voice signal, the microphone generating a first signal and a second signal in response to the first mechanical vibration and the second mechanical vibration, respectively; and
a first angle formed by a vibration direction of the microphone and a direction of the first mechanical vibration is within a set angle range so that in a specific frequency range, a ratio of an intensity of the first mechanical vibration to an intensity of the first signal is greater than a ratio of an intensity of the second mechanical vibration to an intensity of the second signal, wherein the first angle is within an angle range of 20 degrees to 90 degrees.
18 . The acoustic input-output device of claim 1 , wherein a second angle formed by the vibration direction of the microphone and a direction of the second mechanical vibration is within a set angle range.
19 . The acoustic input-output device of claim 18 , wherein the second angle is within an angle range of 0 degrees to 85 degrees.