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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1493761	Parametric Sound Corp	PAMT	Communications Equipment, Nec (3669)	272767540

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1044321	M David Greenhouse & W Austin Marxe	C/O Special Situations Funds 527 Madison Avenue, Suite 2600 New York NY 10022		No	No	Yes	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2011-02-22	1,500,000	$0.50	3,481,411	No	4	P	Indirect	By Limited Partnerships

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	P	Indirect	By Limited Partnerships

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Warrants	Acquisiton	2011-02-22	1,500,000	$0.00	1,500,000	$0.50

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
1,500,000	2011-02-22	2016-02-22	No	4	P	Indirect

Footnotes

This is a joint filing by Austin W. Marxe (Marxe) and David M. Greenhouse (Greenhouse). They share voting and investment control over all securities owned by Special Situations Fund III QP, LP (QP), Special Situations Private Equity Fund, L.P. (PE), Special Situations Technology Fund, LP (TN) and Special Situations Technology Fund II, L.P. (T2), respectively. 1,594,686 shares of Common Stock are held by QP, 556,330 shares of Common Stock are held by PE, 180,378 shares of Common Stock are held by TN and 1,150,017 shares of Common Stock are held by T2. The interest of Marxe and Greenhouse in the shares of Common Stock owned by QP, PE, TN and T2 is limited to the extent of his pecuniary interest.
This is a joint filing by Austin W. Marxe (Marxe) and David M. Greenhouse (Greenhouse). They share voting and investment control over all securities owned by Special Situations Fund III QP, LP (QP), Special Situations Private Equity Fund, L.P. (PE), Special Situations Technology Fund, LP (TN) and Special Situations Technology Fund II, L.P. (T2), respectively. 690,000 Warrants are held by QP, 240,000 Warrants are held by PE, 75,000 Warrants are held by TN and 495,000 Warrants are held by T2. The interest of Marxe and Greenhouse in the shares of Common Stock owned by QP, PE, TN and T2 is limited to the extent of his pecuniary interest.