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  2. Loudspeaker time alignment - Wikipedia

    en.wikipedia.org/wiki/Loudspeaker_time_alignment

    A typical characteristic of a 2-way speaker is that at the crossover frequency, due to the physical distance between the centres of the woofer and tweeter, the sound that emanates from the combination is not omni-directional, but lobed. Within the region of the lobe the sound level, at the crossover frequency is much higher as compared to ...

  3. Line array - Wikipedia

    en.wikipedia.org/wiki/Line_array

    The ratio between two acoustic pressures in deciBels is expressed by the equation dB = 20log(p1/p2), so for every doubling of distance from the point source p1 = 1 and p2 = 2, thus there is a sound pressure decrease of approximately 6 dB. A line source is a hypothetical one-dimensional source of a sound, as opposed to a dimensionless point ...

  4. Critical distance - Wikipedia

    en.wikipedia.org/wiki/Critical_distance

    In a reverberant space, the sound perceived by a listener is a combination of direct and reverberant sound. The ratio of direct sound is dependent on the distance between the source and the listener, and upon the reverberation time in [the room]. At a certain distance the two will be equal. This is called the "critical distance."

  5. 3D sound localization - Wikipedia

    en.wikipedia.org/wiki/3D_sound_localization

    3D sound localization refers to an acoustic technology that is used to locate the source of a sound in a three-dimensional space. The source location is usually determined by the direction of the incoming sound waves (horizontal and vertical angles) and the distance between the source and sensors.

  6. Critical band - Wikipedia

    en.wikipedia.org/wiki/Critical_band

    The bandwidth is the distance between the upper and lower cut-off frequencies, and is the range of frequencies passed by the filter. The shape and organization of the basilar membrane means that different frequencies resonate particularly strongly at different points along the membrane.

  7. Channel sounding - Wikipedia

    en.wikipedia.org/wiki/Channel_sounding

    A higher bandwidth for channel measurement is a goal for future sounding devices. The new real-time UWB channel sounder can measure the channel in a larger bandwidth from near zero to 5 GHz. The real time UWB MIMO channel sounding is greatly improving accuracy of localization and detection, which facilitates precisely tracking mobile devices. [6]

  8. Echo sounding - Wikipedia

    en.wikipedia.org/wiki/Echo_sounding

    The speed of sound will vary slightly depending on temperature, pressure and salinity; and for precise applications of echosounding, such as hydrography, the speed of sound must also be measured, typically by deploying a sound velocity probe in the water. Echo sounding is a special purpose application of sonar used to locate the bottom.

  9. Hafler circuit - Wikipedia

    en.wikipedia.org/wiki/Hafler_circuit

    Named after its early proponent audio engineer David Hafler, the circuit exploits the high amount of stereo separation between Left and Right channels and sound phase. [2] This type of system is called 2:2:4, since the rear channels are simulated from a two-channel stereo track, with no actual extra tracks encoded. The rear channels will ...

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