Datavault AI Inc. Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Convertible Preferred Stock and Stockholders' Equity - Additional Information (Details)

Convertible Preferred Stock and Stockholders' Equity - Additional Information (Details) - USD ($)										1 Months Ended		3 Months Ended						9 Months Ended		12 Months Ended
	May 18, 2020	Feb. 28, 2020	Sep. 09, 2019	Sep. 01, 2019	Apr. 18, 2019	Apr. 17, 2019	Mar. 01, 2019	Jan. 04, 2019	Sep. 01, 2018	Feb. 29, 2020	Jan. 31, 2018	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019	Feb. 06, 2020	Oct. 16, 2019
Class of Stock [Line Items]
Temporary Equity, Shares Issued												250,000						250,000		250,000
Temporary Equity, Dividend Rate, Percentage																		8.00%		8.00%
Class of Warrant or Right, Number of Securities Called by Warrants or Rights					12,756																4,553
Proceeds from Warrant Exercises																		$ 37,000	$ 67,000
Rights upon a subsequent financing given to holder to purchase all, and no less than all, of the securities offered to investors												$ 250,000						250,000
Rights upon a subsequent financing given to holder to tender shares of Series A Preferred Stock for the securities offered												500,000						500,000
Fair Value Adjustment of Warrants												0			$ (18,000)			$ (24,000)	(193,000)
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights																		In the event an employee voluntarily resigns, the release dates of the shares will be extended such that only 16.5% of the shares are released every six months, until 100% are released. In the event that a director voluntarily resigns, each of the release dates will be extended six months
Stock Issued During Period, Value, Restricted Stock Award, Gross												$ 0		$ 0	$ (22,000)		$ (65,000)
Stock Issued During Period, Value, Restricted Stock Award, Forfeitures													$ 0	$ 0
Payments Related to Tax Withholding for Share-based Compensation																		$ 0	$ 87,000
Number of restricted shares granted												353,000						706,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant												352						352
Number of months for termination of employees																		5 months
Issuance of common stock, net of shelf offering costs (in shares)	60,250
Warrants to purchase shares of Common Stock					12,756																4,553
Aggregate intrinsic value												$ 1,000						$ 3,000
February 2020 Private Placement [Member]
Class of Stock [Line Items]
Convertible Preferred Stock, Convertible, Issue of Shares, Threshold Percentage										9.99%
Class of Warrant or Right, Number of Securities Called by Warrants or Rights		4,553								45,534
Class of Warrant or Right, Exercise Price of Warrants or Rights		$ 8.80								$ 9.80
Dividend rate										0.00%
Volatility rate										59.00%
Risk free interest rate										0.89%
Exercise price										$ 6.00
Expected term										5 years
Proceeds from Warrant Exercises										$ 103,000
Share Price		$ 9.17
Warrants and Rights Outstanding, Term		5 years
Number of unit issues , Value		$ 91,062
Number of shares per unit		1
Number of warrants per unit		$ 0.50
Cash fees paid		$ 83,000
Warrants to purchase shares of Common Stock		4,553								45,534
Exercise price of warrants		$ 8.80								$ 9.80
warrant term		5 years
Gross proceeds		$ 835,000
Net proceeds		$ 725,000
Warrants, Beneficial Ownership Interest, Percent										4.99%
Warrant [Member]
Class of Stock [Line Items]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options												7,233,449						7,233,449
Restricted Stock [Member]
Class of Stock [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period																		48,096
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number												98,669						98,669		47,146
Number of restricted shares granted																		102,669
Allocated Share-based Compensation Expense																		$ 210,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period																		2 years 10 months 24 days
Share-based Compensation Award, Tranche One [Member]
Class of Stock [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage									33.40%
Share-based Compensation Award, Tranche Two [Member]
Class of Stock [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage							33.30%
Share-based Compensation Award, Tranche Three [Member]
Class of Stock [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage				33.30%
Employees [Member]
Class of Stock [Line Items]
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures											64,224
Director [Member]
Class of Stock [Line Items]
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures											7,656
Mr Michael Howse [Member]
Class of Stock [Line Items]
Deferred Compensation Arrangement with Individual, Shares Issued								20,000
Alexander Capital, LP.
Class of Stock [Line Items]
Class of Warrant or Right, Exercise Price of Warrants or Rights																						$ 17.50
Dividend rate										0.00%
Volatility rate										59.00%
Risk free interest rate										0.89%
Exercise price										$ 6.00
Expected term										5 years
Proceeds from Warrant Exercises										$ 11,000
Cash fees paid						$ 406,554
Exercise price of warrants																						$ 17.50
George Oliva [Member]
Class of Stock [Line Items]
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures			7,500
LTSI
Class of Stock [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award Maximum Percentage of Shares Authorized																				15.00%
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant												99,619						99,619
Common Shares [Member]
Class of Stock [Line Items]
Stock Issued During Period, Shares, Restricted Stock Award, Gross												353		353	20,514		6,193
Stock Issued During Period, Value, Restricted Stock Award, Gross												$ 0		$ 0
Stock Issued During Period, Value, Restricted Stock Award, Forfeitures													$ 0	$ 0
Issuance of common stock, net of shelf offering costs (in shares)														91,062		203,786
Series A Preferred Stock
Class of Stock [Line Items]
Temporary Equity, Shares Issued					250,000
Preferred Stock, Par or Stated Value Per Share												$ 4.00						$ 4.00
Temporary Equity, Stated Value Per Share					$ 4.00
Temporary Equity, Dividend Rate, Percentage					8.00%
Convertible Preferred Stock Conversion Price					$ 80.00							80.00						$ 80.00
Convertible Preferred Stock Floor Price Per Share					$ 30.00
Convertible Preferred Stock, Convertible, Issue of Shares, Threshold Percentage																		95.00%
Proceeds from Issuance of Convertible Preferred Stock					$ 1,000,000													$ 920,000
Class of Warrant or Right, Reduced Exercise Price of Warrants or Rights												$ 30.00						$ 30.00
Embedded Derivative, Fair Value of Embedded Derivative Liability					$ 216,000
Preferred Stock, Convertible, Threshold Trading Days					5 days
Dividends												$ 20,000						$ 60,000
Preferred stock, Redemption Value Percentage					120.00%
Share Price												$ 4.00						$ 4.00
Series A Preferred Stock \| Minimum
Class of Stock [Line Items]
Proceeds from Issuance of Convertible Preferred Stock					$ 500,000
Preferred stock, Redemption Basis, Amount Sought or Declared					100,000
Preferred stock, Redemption Basis, Gain or Loss on Property					100,000
Series A Preferred Stock \| Maximum
Class of Stock [Line Items]
Proceeds from Issuance of Convertible Preferred Stock					$ 5,000,000