v2.4.0.6

REPORTABLE SEGMENTS AND GEOGRAPHIC INFORMATION (Details) (USD $)	3 Months Ended
	Jul. 31, 2012 item	Jul. 31, 2011	Apr. 30, 2012
REPORTABLE SEGMENTS AND GEOGRAPHIC INFORMATION
Number of main product categories	2
Number of reportable segments	2
Segment Data
Revenue	$ 3,538,000	$ 3,689,000
Contribution margin	(936,000)	(617,000)
Inventories	2,551,000		2,375,000
Reconciliation of segment information to the entity's condensed consolidated totals
Segment contribution margin	(936,000)	(617,000)
Corporate and unallocated costs	(2,170,000)	(2,182,000)
Stock-based compensation expense	(106,000)	(9,000)
Amortization of purchased intangibles	(21,000)	(20,000)
Other income (expense), net	10,000	(19,000)
Loss before provision for (benefit from) income taxes	(3,223,000)	(2,847,000)
Voice Quality Enhancement
Segment Data
Revenue	2,025,000	2,689,000
Contribution margin	836,000	821,000
Inventories	2,551,000		2,375,000
Reconciliation of segment information to the entity's condensed consolidated totals
Segment contribution margin	836,000	821,000
Voice Applications
Segment Data
Revenue	1,513,000	1,000,000
Contribution margin	(1,772,000)	(1,438,000)
Reconciliation of segment information to the entity's condensed consolidated totals
Segment contribution margin	$ (1,772,000)	$ (1,438,000)

Represents the amount of costs not allocated to segments.

+ References

No definition available.

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- Definition

Represents the number of product categories of the entity.

+ References

No definition available.

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- Definition

Includes all product line segment revenues less the related cost of sales, marketing and engineering expenses directly identifiable to each segment. Management also allocates corporate manufacturing costs and some infrastructure costs such as facilities and information technology costs in determining segment contribution margin.

+ References

No definition available.

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- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph a(2)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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- Definition

Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-Paragraph 1

-Subparagraph (SX 210.4-08.(h)(1)(i))

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-Number 210

-Section 08

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- Definition

Carrying amount (lower of cost or market) as of the balance sheet date of inventories less all valuation and other allowances. Excludes noncurrent inventory balances (expected to remain on hand past one year or one operating cycle, if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

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-Paragraph 1

-Subparagraph (SX 210.5-02.6(a))

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- Definition

The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-Paragraph 2

-Subparagraph (SX 210.5-03.7)

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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

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- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

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- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 28

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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