Note 11 - Equity (Tables)

9 Months Ended

12 Months Ended

Sep. 30, 2024

Dec. 31, 2023

Notes Tables

Schedule of Stock by Class [Table Text Block]

	December 31
	2023		2022		2023		2022
	Number of authorized shares		Number of authorized shares		Number of issued shares		Number of issued shares
Shares of common stock		2,470,000,000		2,470,000,000		35,369,877		2,552,744
Series A Preferred Stock						-		-
Series B Preferred Stock		30,000,000		30,000,000		14,578,833		-
Series C Preferred Stock						1,538,134		-

Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]

	Number of Warrants		Weighted Average Exercise Price		Weighted Average Remaining Life
Outstanding warrants, January 1, 2024		193,433	$	23.46		2.74
Series C Warrants (Note 10.a)		86,820		24.62
Broker warrants for Series C Offering (Note 10.a)		4,163		12.31
PIPE Warrants (Note 10.a)		823,529		6.83
WaveDancer legacy warrants (Note 4)		76,098		94.69
Outstanding warrants, September 30, 2024		1,184,043	$	16.51		4.06

	Number of Warrants			Weighted Average Remaining Life
Outstanding warrants, January 1, 2024		54,782			1.51
Pre-funded warrants (Note 10.a)		504,324
Series A warrants (Note 10.d)		629,039
Series D warrants (Note 10.e)		92,798
Consulting agreement warrants (Note 10.f)		44,932
Exercised		(435,169	)
Outstanding warrants, September 30, 2024		890,706			3.48

	Number of Warrants		Weighted Average Exercise Price		Weighted Average Remaining Life
Outstanding warrants, January 1, 2022		123,333	$	7.50		0.85
Warrants issued pursuant to issue of convertible debt and preferred shares to individual investors		198,482		3.00
Warrants issued pursuant to modification of convertible debt		526,749		0.75
Outstanding warrants, December 31, 2022		848,564	$	2.26		2.50
Warrants issued pursuant to units offering		1,538,113		2.56
Outstanding warrants, December 31, 2023		2,386,677	$	2.07		2.46

Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	2024
Stock price		$6.91
Risk free rate	3.75%	-	3.82%
Dividend yield		0%
Expected volatility	86.50%	-	87.60%
Expected term (in years)	3.91	-	4.93

	2023			2022
Risk free rate		4.35	%		4.5	%
Dividend yield		0	%		0	%
Expected volatility		86	%		86	%
Expected term (in years)		3			3
Expected life (in years)		5			5

Share-Based Payment Arrangement, Option, Activity [Table Text Block]

	Number of Stock Options		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value
Outstanding Options, December 31, 2023		134,333	$	20.77		6.18	$	-
Options granted		335,728		5.18		-		-
WaveDancer options		113,522		82.25		-		-
Outstanding Options, September 30, 2024		583,583	$	23.77		3.43	$	-

	Number of Stock Options			Weighted Average Grant-Date Fair Value
Non-Vested Options, December 31, 2023		90,988		$	4.77
Options granted		335,728			4.77
Options vested		(185,704	)		4.94
Non-Vested Options, September 30, 2024		241,012		$	4.63

	Number of Stock Options		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term		Aggregate Intrinsic Value
Outstanding Options, December 31, 2022		495,746	$	4.70		6.90	$	-
Options granted		795,916		0.58
Outstanding Options, December 31, 2023		1,291,662	$	2.16		6.18	$	-

	Number of Stock Options			Weighted Average Grant- Date Fair Value
Non-Vested Options, December 31, 2022		325,853		$	2.20
Options granted		795,916			0.00
Options vested		(246,883	)		1.15
Non-Vested Options, December 31, 2023		874,886		$	0.50