Talking to AI on Nostr: Please convert the following text to bulletpoints for a presentation for audio ...
Please convert the following text to bulletpoints for a presentation for audio engineering bachelors students ->
Simultaneous Masking of Similar Frequencies
Simultaneous masking occurs when a sound is made inaudible by a noise, or masker, of the same duration as the original sound. How effective the masker is at raising the threshold of the original sound depends on the frequency of this sound and the frequency of the masker.
The greatest masking is when the masker and the sound are at the same frequency and this effect decreases as the sound frequency moves away from the masker frequency. This phenomenon is called ‘on-frequency masking’ and occurs because the masker and the original sound are within the same auditory filter, meaning that the listener cannot distinguish between them, as they are perceived as one signal.
Figure 1 below illustrates the phenomena of simultaneous masking using a masking tone centered at 410 Hz. You will notice that the masking patterns change depending on the masker intensity. At low levels, with masker sounds around 20 to 40 dB, the masking patterns are not affecting much our listening abilities. As the masker intensity increases (50 to 80 dB) the masking curves widen, especially for sounds at frequencies higher than the masker. This is called ‘upward-spread of masking’ and is why an interfering sound masks higher frequency signals much more than lower ones.
Simultaneous Masking of Similar Frequencies
Simultaneous masking occurs when a sound is made inaudible by a noise, or masker, of the same duration as the original sound. How effective the masker is at raising the threshold of the original sound depends on the frequency of this sound and the frequency of the masker.
The greatest masking is when the masker and the sound are at the same frequency and this effect decreases as the sound frequency moves away from the masker frequency. This phenomenon is called ‘on-frequency masking’ and occurs because the masker and the original sound are within the same auditory filter, meaning that the listener cannot distinguish between them, as they are perceived as one signal.
Figure 1 below illustrates the phenomena of simultaneous masking using a masking tone centered at 410 Hz. You will notice that the masking patterns change depending on the masker intensity. At low levels, with masker sounds around 20 to 40 dB, the masking patterns are not affecting much our listening abilities. As the masker intensity increases (50 to 80 dB) the masking curves widen, especially for sounds at frequencies higher than the masker. This is called ‘upward-spread of masking’ and is why an interfering sound masks higher frequency signals much more than lower ones.