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Weiss Enginering Ltd.

DSP501/DSP502

Time in seconds

Frequency in Hz

Time in seconds

Frequency in Hz

4

200

77

65

4

199

78

64

5

197

79

63

6

194

80

62

7

191

81

61

8

188

82

60

9

185

83

59

10

182

84

58

11

179

85

57

12

177

86

56

13

174

87

56

14

171

88

55

15

169

89

54

16

166

90

53

17

163

91

52

18

161

92

51

19

159

93

51

20

156

94

50

21

154

95

49

22

152

96

48

23

149

97

48

24

147

98

47

25

144

99

46

26

142

100

45

27

140

101

45

28

138

102

44

29

136

103

43

30

134

104

43

31

132

105

42

32

130

106

41

33

128

107

41

34

126

108

40

35

124

109

40

36

122

110

39

37

120

111

38

38

118

112

38

39

117

113

37

40

115

114

37

41

113

115

36

42

111

116

36

43

109

117

35

44

108

118

34

45

106

119

34

46

105

120

33

47

103

121

33

48

101

122

32

49

100

123

32

50

98

124

31

51

97

125

31

52

95

126

30

53

94

127

30

54

92

128

30

55

91

129

29

56

90

130

29

57

88

131

28

58

87

132

28

59

86

133

27

60

84

134

27

61

83

135

26

62

82

136

26

63

80

137

26

64

79

138

25

65

78

139

25

66

77

140

24

67

76

141

24

68

74

142

24

69

73

143

23

70

72

144

23

71

71

145

23

72

70

146

22

73

69

147

22

74

68

148

22

75

67

149

21

76

66

150

21

151

21

152

20

153

20

User Manual and

11

White Papers

Summary of Contents for DSP501

Page 1: ...DSP501 DSP502 User Manual and White Papers Software Version 2 5 1r2997 Date February 15 2022...

Page 2: ...Headphone 14 2 3 12 Snapshot Storage 16 2 3 13 Global Presets 17 2 3 14 Firmware Update Download 18 2 3 15 M S Control 18 3 Technical Specification 19 4 Signal Processing Algorithms 21 4 1 The Weiss p...

Page 3: ...0 year history in Digital Signal Processor design In that time span we have learned a thing or two about algorithm design The DSP50x is the essence of our experiences Figure 2 The DSP501 The DSP502 fi...

Page 4: ...gs This opens a menu which allows to select one of the DSP algorithms to be changed Note the rotary knob allows to scroll through the menus The algorithms can be operated via the touch screen but we r...

Page 5: ...the DSP Presets is given in the web interface description below Figure 3 IR remote control 2 3 The Web Interface As last but not least possibility to operate with your DSP50x we offer you the Web Inte...

Page 6: ...Weiss Enginering Ltd DSP501 DSP502 Figure 4 Web interface overview User Manual and 4 White Papers...

Page 7: ...the high frequency content of music So this plugin can be beneficial if your favourite recording contains some unpleasant harsh sounds But sharpness can also arise during mastering or as a results of...

Page 8: ...ted To switch a plugin on off just tap on the enable bypass tab The selection is highlighted in red By moving the slider you can adjust the user parameter Saturation The Saturation parameter adjusts t...

Page 9: ...izer plugin A little example should give you an idea of the functionality and the manifold opportunities the EQ offers The 1st band is set to low shelving with a boost of 0 5dB at 147 Hz i e frequenci...

Page 10: ...nsider the following instructions on how to set up the Room EQ with a simple procedure without using any measurement In an alternative setup scenario we will use the room measurement software of the I...

Page 11: ...ries you may visit this website and calculate the potential room mode frequencies by entering the dimensions of your listening room https amcoustics com tools amroc This can help with determining the...

Page 12: ...ction without boomed bass Note you may have gotten used to the acoustics of your playback setup and then when correcting it with the Room EQ it may sound strange at first But keep it and listen to it...

Page 13: ...32 105 42 32 130 106 41 33 128 107 41 34 126 108 40 35 124 109 40 36 122 110 39 37 120 111 38 38 118 112 38 39 117 113 37 40 115 114 37 41 113 115 36 42 111 116 36 43 109 117 35 44 108 118 34 45 106 1...

Page 14: ...wede In acoustics this loudness describes the subjective perception of sound pressure1 Schwedes EQ design then considers this subjective perception to create a more pleasant playback regarding the sou...

Page 15: ...rall the same loudness impression To adjust how strong this dynamic range reduction should affect the playback you can set the Dynamic Level If you want to have less dynamics left in the output choose...

Page 16: ...ers and Distance Listener faders If the geometry is not very well suited for the XTC playback the background of the two fader sections turns yellow The XTC may still work but may be compromised Note t...

Page 17: ...phone plugin allows adjusting the Amount level between 0 and 100 in order to achieve your preferential setting A higher Amount results in stronger impact of the plugin s effect on the played back audi...

Page 18: ...so part of its setting and will be stored in the snapshot Figure 14 Snapshots maintenance In order to recall a stored snapshot select it by name from the list and tap on Snapshot Load Store a plugin s...

Page 19: ...SP algorithms are bypassed The plugin sequence within the composer matrix reflects the actual sequence of the DSP processing Pre set snapshot dropdown lists of plugins which are currently not applicab...

Page 20: ...onnect to our Server to see whether there is any new device firmware available The DSP50x has to be connected via Ethernet to your internet router If new firmware is available the pad allows to downlo...

Page 21: ...200 240 V automatic voltage selection Fuse rating 500 mA slow blow Power consumption 10 VA max Power consumption in standby 2 2 VA max Size DSP501 Depth 30 cm Width 18 8 cm Height 6 6 cm Height with...

Page 22: ...BU outputs Sampling frequency selectable between 88 2 kHz 96 kHz 176 4 kHz 192 kHz Toslink input 44 1 kHz 48 kHz 88 2 kHz 96 kHz Input word length max 24 32 Bits Digital Outputs 2 RCA Connectors 2 XLR...

Page 23: ...dependent bands Each of them can be set to a mode namely low cut high cut to get rid of disturbing low or high frequencies low shelf high shelf to boost or cut low or high frequencies or peaking to bo...

Page 24: ...low cut filter also called high pass filter is displayed Figure 21 Low pass and high pass filter scheme To finalize this section you find an example chart that visualizes examples of frequencies for v...

Page 25: ...y that frequency then can be suppressed to some extent with the room EQ See section 2 3 6 for instructions about how to find room modes with a slow sine wave sweep If a room mode is very pronounced th...

Page 26: ...e on headphones The main impressions you will get with the XTC based playback are Large stereo stage much wider than the space between the speakers A feeling of depth i e a 3 D like presentation Very...

Page 27: ...additional resonance frequencies specific noise at various frequencies specific crosstalk between left and right channels specific effects caused by the RIAA emphasis specific amplitude modulation ef...

Page 28: ...it long result The digital to analog converter which converts the samples after the level control may only be capable to handle 16 bit wide samples Thus what should we do with the excessive 8 bits The...

Page 29: ...it converters no question that a level control with a 24 bit word length easily rivals the best analog level controls By the way 24 bits means 16 777 216 quantization steps The last example below togg...

Page 30: ...should effect the audio signal To be able to use the plugin properly it is helpful to understand how the levels of the plugin effect the audio signal There are two main levels the Dynamic Level and th...

Page 31: ...different recordings with a wide range of loudness levels choose a lower and if needed negative Dynamic Level The lower this level is the more the dynamic content is limited The value 0dB is our defa...

Page 32: ...l untouched This idea is based on the so called m s stereophony Which is a coding process that transforms the signals of the left and right into a different representation The mid signal is the sum of...

Page 33: ...define the Amount of the chosen De Essing effect Independently a special normalization is performed to create a result that is individually matched with the current sound of the music This is needed o...

Page 34: ...ow the different modes sound For the parameter Amount a good starting point could be around 6dB Futhermore in the beginning it is more easy for getting to know the sound of the De Esser and finding yo...

Page 35: ...f such a headphone frequency response measurement is plot ted in red In reality such measurements are far more complex This exemplary headphone only creates an amplification imbalance in two frequency...

Page 36: ...cert hall So Schwede s concept tries to overcome these non linearities of the human sense of hearing with a equalizer design which creates an optimized compensation curve based on the psychoacoustic a...

Page 37: ...Weiss Enginering Ltd DSP501 DSP502 5 Contact Information Weiss Engineering Ltd Daniel Weiss www weiss ch weiss weiss ch User Manual and 35 White Papers...

Page 38: ...treatment overview 22 23 Dummy head microphone 23 24 XTC scheme 24 25 Block diagramm of the Weiss Vinyl Emulator 25 26 Image processing original left quantized without dithering middle quantized with...

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