2.4.2. Audio Sound Field¶

2.4.2.1. Demo 1: PalCircSrc_SWE_Demo1.m¶

Calculate the 2D audio sound field using the SWE.

2.4.2.1.1. Parameters¶

Item	Value
Aperture size	10 cm
Source profile	Uniform (piston source)
Audio frequency	1 kHz
Ultrasound frequency	40 kHz

2.4.2.2. Demo 2: PalCircSrc_SWE_Demo2.m¶

Calculate the directivity of the audio sound using the SWE.

2.4.2.3. Demo 3: CircSrc_SWE_Demo3.m¶

Calculate the linear radial sound pressure using the SWE and compared to the inward-extrapolated far field pressure.

See Fig. 2.4.2.

../../_images/CircSrc_SWE_Demo3_10cm_4kHz_theta0.png

../../_images/CircSrc_SWE_Demo3_10cm_4kHz_theta10.png — Fig. 2.4.2 Audio SPL as a function of the propagating distance at 4~kHz generated by a circular conventional loudspeaker with a radius of 10 cm and a uniform profile (piston source). Red circles, exact solution; blue squares, inward-extrapolated far field pressure; top, \(\theta = 0^\circ\); bottom, \(\theta =10^\circ\). Dashed line, critical distance; dotted line, Rayleigh distance.¶