A review

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A review

Talk	Tech
This lesson concentrates on music. Ten different musical selections will be presented, each having a single dominant fault artificially induced. The musical selections from one to two minutes in length are long enough to enable you to listen carefully, critically, and analytically. This approximates the real-life situations better than the brief speech and music selections of the previous lessons. The object of the game is for you to concentrate on each musical selection, in your most discriminating way, to identify the dominant fault which has been introduced. To help you maintain a proper reference, the opening and closing 20 seconds of each selection will be clean (without the fault). These 20-second sections will be marked by short breaks in the music.	[View full size image]
It is quite possible that you may detect one or more less dominant faults which may have been unintentionally introduced at some stage of the recording process or possibly introduced by your own reproducing equipment.
A form has been provided in the manual for you to jot down your identification of the artificially introduced dominant fault for each selection. If other faults are detected, record them at the bottom of the form in the space provided. Are you ready? All right, let’s go! First, Selection 1: Selection 2: Selection 3: Selection 4: Selection 5: Selection 6: Selection 7: Selection 8: Selection 9: Selection 10: That concludes both the Critical Listening course and Lesson 10. Maximum benefit can be derived from this course only by going back over each lesson until it is mastered.	See Supplemental Data for Listening With Discernment Evaluation Sheet on pages 95-97

Talk

Tech

This lesson concentrates on music. Ten different musical selections will be presented, each having a single dominant fault artificially induced.

The musical selections from one to two minutes in length are long enough to enable you to listen carefully, critically, and analytically. This approximates the real-life situations better than the brief speech and music selections of the previous lessons.

The object of the game is for you to concentrate on each musical selection, in your most discriminating way, to identify the dominant fault which has been introduced.

To help you maintain a proper reference, the opening and closing 20 seconds of each selection will be clean (without the fault). These 20-second sections will be marked by short breaks in the music.

[View full size image]

It is quite possible that you may detect one or more less dominant faults which may have been unintentionally introduced at some stage of the recording process or possibly introduced by your own reproducing equipment.

A form has been provided in the manual for you to jot down your identification of the artificially introduced dominant fault for each selection. If other faults are detected, record them at the bottom of the form in the space provided. Are you ready? All right, let’s go!

First, Selection 1:

Selection 2:

Selection 3:

Selection 4:

Selection 5:

Selection 6:

Selection 7:

Selection 8:

Selection 9:

Selection 10:

That concludes both the Critical Listening course and Lesson 10. Maximum benefit can be derived from this course only by going back over each lesson until it is mastered.

See Supplemental Data for Listening With Discernment Evaluation Sheet on pages 95-97

Listening With Discernment Evaluation Sheet

Answers on page 94

INTENTIONAL FAULTS	MUSICAL SELECTION
INTENTIONAL FAULTS	1	2	3	4	5	6	7	8	9	10
Low frequencies cut off
High frequencies cut off
High-frequency peak
Low-frequency peak
Distortion: (clipping)
Excessive reverberation
High background noise
UNINTENTIONAL FAULTS
Hum
Record scratch
Wow
Turntable rumble
Flutter
Dropouts
Other

Listening With Discernment Evaluation Sheet

Answers

MUSICAL SELECTION	INTENTIONAL FAULTS
MUSICAL SELECTION	1	2	3	4	5	6	7	8	9	10
Low frequencies cut off							X
High frequencies cut off			X							X
High-frequency peak	X
Low-frequency peak		X
Distortion: (clipping)					X				X
Excessive reverberation								X
High background noise				X		X
UNINTENTIONAL FAULTS
Hum
Record scratch
Wow
Turntable rumble
Flutter
Dropouts
Other

Talk	Tech
Supplemental Data for Listening with Discernment Evaluation Sheet
Selection 1 The fault intentionally introduced in Musical Selection 1 is a high-frequency peak of 15 dB centered on 6 kHz.	[View full size image]
Selection 2 In Musical Selection 2, a 14-dB peak centered about 200 kHz has been introduced.	[View full size image]
Selection 3 Musical Selection 3 has a drastic roll-off of high frequencies above 1 kHz.	[View full size image]
Selection 4 Musical Selection 4 has a high background noise. White noise has been introduced to give a signal-to-noise ratio of 25 dB.	[View full size image]
Selection 5 Musical Selection 5 has serious clipping on both positive and negative peaks.	[View full size image]
Selection 6 Musical Selection 6 has a high background noise level somewhat lower than that of Selection 4. The signal-to-noise ratio is 20 dB.	[View full size image]
Selection 7 Musical Selection 7 has a drastic low-frequency roll-off below about 3 kHz.	[View full size image]
Selection 8 Excessive reverberation has been applied to Musical Selection 8. The reverberation time of the artificial reverberator is 2½ seconds with a 25-millisecond delay applied to improve naturalness.	[View full size image]
Selection 9 Musical Selection 9 suffers from the same serious symmetrical clipping as Selection 5.	[View full size image]
Selection 10 Selection 10 has the same high-frequency roll-off above 1 kHz as Selection 3.	[View full size image]