Vanity
PRO
–
User Manual v1.2
Page 12 of 19
Filters Characteristics
There are four conversion filter characteristics available in the Vanity
PRO
. The filters differ
in their steepness and the amount of attenuation of the ultrasonic noise. All four characteristics
can be used when the output sampling rate is set to 176.4kHz and only two with
88.2kHz. The filters optimized for 88.2kHz output sampling rate have
“
LB
”
suffix for
“
Low
Bandwidth
”
and filters optimized for 176.4kHz output sampling rate have
“
HB
”
suffix for
“
High
Bandwidth
”
. The frequency plots below show output spectrum of DSD test signal with 1kHz tone
at 0dB converted to PCM 24bit and 176.4kHz. Typical bumps if the DSD noise floor can be
observed in the audio frequency band.
Sharp LB
This filter optimized for 88.2kHz output sample rate has sharp roll-off with cut-off
frequency approximately 20kHz. Chose this filter for high attenuation of the ultrasonic noise.
Slow LB
This filter optimized for 88.2kHz output sample rate has slow roll-off with cut-off
frequency approximately 25kHz. Chose this filter for better transient response with slightly higher
level of the ultrasonic noise.
Summary of Contents for VanityPRO
Page 1: ...VanityPRO User Manual...